LibriaPosture, measured true.Start my scan

The complete guide

How to use Libria

No biomechanics needed. This page explains what the app measures, which of the three scans to pick, exactly how to take each one, and how to read the report you get back — in ordinary words, as if you had never heard any of these terms before.

  • A scan takes about 2 minutes
  • No app to install
  • From ₹99 per report
  • Photos stay on your phone

In a hurry? The whole thing in 60 seconds

  1. 1

    Prop your phone and step back

    Stand it upright against something solid, roughly level with your hips, and walk back two and a half to three metres — about four big steps — until your head and both feet fit in the picture.

  2. 2

    Pick your scan and follow the screen

    Posture for how you stand, Gait for how you walk, Range of Motion for one joint that will not move properly. The app tells you where to stand and when to hold still.

  3. 3

    Read the plain-English part first

    Your report opens with a general impression written in ordinary words, plus a couple of exercises. The degrees and the reference ranges are underneath if you want them.

That really is the whole job. Everything below is the detail — worth ten minutes if you want the numbers to mean something the second time you scan.

1What it actually is

What Libria actually does

A camera, some maths, and a report. No magic, and nothing touching you.

Your phone camera takes a picture. Software running inside your browser looks at that picture and works out where your joints are — the point of each shoulder, each hip, each knee, each ankle, the line of your ears. It marks them as dots and joins them with lines, a bit like the stick figure you drew as a kid, except placed on your actual body.

Once the dots are placed, the rest is geometry you did at school. If one shoulder dot sits higher than the other, that is an angle, and an angle can be measured. Do that for your head, shoulders, hips, trunk and knees and you have a measured description of how you were standing, in degrees, instead of "I think I slouch a bit".

That is genuinely all it is. No X-ray, no scanner, nothing touching you, and nothing that can see under your skin. It measures what a very patient person with a protractor could measure from a photograph — just faster, on both sides at once, and without getting bored or biased.

  • It is a screening tool, not a diagnosis

    It can tell you that your right shoulder sits four degrees lower than your left. It cannot tell you why, and it is not allowed to guess at a condition. That is a job for a physiotherapist or a doctor — and the report is written to be handed to one.

  • It measures the outside only

    Bone, disc, cartilage, nerve and muscle are all invisible to a camera. If something hurts, a scan is a useful description of how you move with that pain. It is not a look inside you.

  • It measures the day you took it

    You stand differently when you are tired, sore, cold or in a hurry. One scan is a snapshot. Two scans taken the same way, weeks apart, are a trend — and a trend is the thing worth acting on.

2Which scan to pick

Which of the three scans should you pick?

Standing still, walking, or bending one joint. Pick by what is bothering you.

Body Posture Check

Three photos of you standing still, measured for tilt, lean and slump.

Pick this if

  • You sit at a desk or over a phone all day and your neck or upper back aches by the evening.
  • Someone told you that you slouch, or that one shoulder looks higher than the other.
  • You want a starting point — a baseline you can measure against in three months.
  • You are not sure which scan to pick. This is the one most people should start with.

What lands in your report

  • Head tilt and how far forward your head is carried (the "phone neck" pattern)
  • Shoulder level, and which side is lower
  • Pelvic tilt and sideways weight shift
  • Trunk lean, sideways and forward, plus your plumb line from the side
  • Knee alignment on each side, and the difference between them
  • An alignment index out of 100, and optionally how much you sway when standing still

Pick something else if: Your problem only shows up when you move — a knee that hurts on stairs, a hip that clicks when you walk. Standing still will not show it.

  • About two minutes
  • On your own? Yes — switch on auto-capture or the self-timer before you walk into frame.

Gait Analysis

One short video of you walking, measured for rhythm, stride and symmetry.

Pick this if

  • Something hurts when you walk or run, but feels fine standing still.
  • You limp, or you suspect you do, and want to know by how much.
  • One shoe wears out much faster than the other.
  • You are coming back from an ankle, knee or hip injury and want to see whether both legs are working equally again.

What lands in your report

  • Cadence — how many steps a minute you take
  • How long each step takes on the left and on the right, and the gap between them
  • Step-time asymmetry: the single clearest number for "am I limping?"
  • How much each arm swings, and the difference between them
  • How much each knee bends at its peak during the walk
  • A tracking-confidence label, so you know how much to trust the numbers

Pick something else if: You have nowhere to walk a straight line of at least five or six metres, or you are unsteady on your feet without support. Safety first — do the posture check instead.

  • About three minutes
  • On your own? Easier with a friend. Someone needs to tap the arrow on screen as you change direction, or prop the phone and tap it yourself between passes.

Range of Motion

One body area, every movement it should make, both sides, measured in degrees.

Pick this if

  • One specific joint will not move as far as it used to — a shoulder you cannot lift, a neck that will not turn.
  • You are recovering from an injury or surgery and want to track a joint getting its movement back.
  • One side feels tighter than the other and you want to know whether it really is, and by how much.
  • A physiotherapist asked you to keep an eye on a particular joint between appointments.

What lands in your report

  • Every movement the chosen area needs, measured left and right separately
  • Each angle in degrees, next to a provisional adult reference range
  • A clear left-versus-right comparison for every paired movement
  • A tracking-quality figure for each reading, so a rushed one is obvious

Pick something else if: Nothing in particular is stuck and you just want a general check-up. Start with the posture check — it covers your whole body at once.

  • Three to six minutes, depending on the area
  • On your own? Possible, but a helper makes it much easier — someone has to tap Track and Save for each movement.

Still not sure? Find your complaint

  • “My neck and upper back ache from my desk or my phone”

    Forward head carriage and shoulder level are exactly what the standing check measures.

    Posture

  • “My lower back hurts after standing or sitting a while”

    Pelvic tilt, trunk lean and weight shift all show up in the three standing views.

    Posture

  • “One shoulder looks higher, or my clothes hang unevenly”

    Shoulder level and trunk lean are measured against the horizontal in degrees.

    Posture

  • “My knee hurts on stairs or while running”

    Knee bend and left-right timing only appear while you are actually moving.

    Gait

  • “I think I limp, or someone said I do”

    Step-time asymmetry puts a number on it instead of an opinion.

    Gait

  • “One shoe wears down much faster than the other”

    Uneven wear usually means uneven loading, which shows in stride timing and symmetry.

    Gait

  • “I cannot lift my arm as high as before”

    Flexion, abduction and both rotations, measured on each arm and compared.

    ROM · Shoulder

  • “I cannot turn my head far enough to reverse the car”

    Neck rotation and side bend, each side, against a reference range.

    ROM · Neck

  • “My knee will not straighten or bend fully after an injury”

    Knee flexion and extension on both legs, which is the pair a physiotherapist tracks in rehab.

    ROM · Knee

  • “My hip feels tight when I sit cross-legged”

    Hip flexion, extension, abduction and both rotations in one checklist.

    ROM · Hip

  • “I just want a general check-up”

    It covers head to knee in one go and makes the best baseline for everything later.

    Posture

  • “I want to track whether my training is changing anything”

    The mode matters less than repeating it the same way. The second scan is compared line by line with the first.

    Any — then repeat it

Genuinely torn? Take the posture check. It covers the most ground, it is the easiest to do alone, and it makes the best baseline for whatever you scan next.

3Set up in 2 minutes

Setting up: two minutes, six things

Get this right once and every scan you ever take will be worth comparing.

  1. Setup 1

    Find two and a half to three metres of clear floor

    About four big steps back from the phone. You need your whole body in the picture — the top of your head and both feet, with a little space around them. Move the coffee table.

    Common mistake: Standing too close. If your feet are cut off, the app cannot find your ankles, and half the measurements simply will not appear.

  2. Setup 2

    Prop the phone upright, level, at hip height

    Portrait, not landscape. Rest it against a stack of books, a shoe, a water bottle — anything solid. Roughly level with your hips, which for most people is a low shelf or a chair seat. The app shows a level guide and one big word telling you which way to tip it.

    Common mistake: A phone tilted back on a sofa cushion. A leaning camera makes a level body look crooked, so the app refuses to capture until it is straight. That refusal is the feature, not a bug.

  3. Setup 3

    Put the light in front of you, not behind you

    Face a window or a lamp. A plain wall behind you is ideal — fewer things for the tracking to confuse with a limb.

    Common mistake: Standing with a bright window behind you. You become a silhouette, the tracking loses your outline, and the confidence score drops.

  4. Setup 4

    Wear something the camera can see your shape through

    Close-fitting clothes. Tuck a loose top in. Shorts or leggings are better than baggy trousers. Tie long hair up so your neck and shoulder line are visible.

    Common mistake: A hoodie. The app ends up measuring the hoodie, and your shoulder line is wherever the fabric happens to hang.

  5. Setup 5

    Decide barefoot or shoes — and write it down

    Either is fine. The app asks you which, and prints it on the report. What matters is doing the same thing next time, because shoes change how you stand and how you walk.

    Common mistake: Barefoot in January, trainers in June, then wondering why the numbers moved.

  6. Setup 6

    Say yes to the camera prompt

    Your browser will ask for camera access the first time. The scan cannot run without it. Nothing is being uploaded when you say yes — the camera feed is being handed to code running on your own phone.

    Common mistake: Tapping "block" out of habit, then having to dig through browser settings to undo it.

The one habit that makes this worth doing

Take a photo of your set-up. Seriously — where the phone sat, how far back you stood, what you wore. Two scans are only a trend if both were taken the same way, and the app compares your new report with your last one line by line. Recreating the room is what makes that comparison mean something.

4Take a posture scan

Taking a Body Posture Check, step by step

Three photos of you standing still — front, side and back.

Body Posture Check · About two minutes

  1. 1

    Answer three quick questions

    Who is being scanned, what you are hoping to find out, and anything that currently hurts. It takes ten seconds and it shapes the written part of your report, so a real answer beats a blank box.

  2. 2

    Turn on hands-free capture if you are alone

    In the viewfinder there is an auto-capture button and a self-timer (3 or 10 seconds). Switch one on before you walk into frame, or the shutter will sit there waiting for a tap you cannot reach. There is also voice guidance, which reads the prompts out loud — useful when you cannot see the screen from three metres away.

  3. 3

    View 1 — Front

    Face the camera squarely, feet about hip width apart, arms relaxed by your sides. Look straight ahead, not at the phone. Stand the way you normally stand, not the way you stand when someone says "stand up straight". Hold still for about ten seconds while it samples.

  4. 4

    View 2 — Side

    Turn a quarter-turn on the spot — one shoulder now faces the camera. Do not step sideways and do not shuffle your feet apart; the app is about to measure how you stack up over your ankles, and moving your feet changes the answer. Look straight ahead. Hold still again.

  5. 5

    View 3 — Back

    Another quarter-turn, so your back faces the camera. Same stance, same stillness, about ten seconds.

  6. 6

    Optional — the 15-second standing hold

    One button, and worth it. You stand quietly with your eyes open for fifteen seconds and the app measures how much you drift, which is a measure of steadiness. Keep something solid within reach, and skip it entirely if standing still is uncomfortable. It never costs you your photographs — if it goes wrong you can retry just the hold.

  7. 7

    Generate the report

    Check the three thumbnails look like you and nothing is cut off. Then tap generate. This is the moment a credit is used — not before.

Watch out for: Posing. The instinct in front of a camera is to pull your shoulders back and lift your chin, which measures a posture you hold for four seconds a year. Shake your arms out, look at a spot on the wall, breathe out, and let your body go where it normally goes.

Before it takes your credit: The app needs at least three usable measurements and a tracking quality of 60 or better before it will build a posture report. If your capture was too dark, too far or too cluttered it asks you to retake — and asks before spending your credit.

5Take a gait scan

Taking a Gait Analysis, step by step

One short video of you walking, in three directions.

Gait Analysis · About three minutes

  1. 1

    Find a straight walkway

    Five or six metres of clear floor, straight, with room to turn around safely at each end. A hallway, a driveway, a long room. The camera stays where it is; you are the one who moves.

  2. 2

    Start the clip

    It is one recording, up to thirty seconds, covering three legs. Do not stop and restart between them — the whole point is one continuous clip that the analysis cuts up afterwards.

  3. 3

    Leg 1 — walk straight toward the phone

    Start at the far end and walk at your ordinary, comfortable speed straight at the camera. Not a catwalk, not a march. Stop before you reach it. Whoever is holding the phone taps the arrow as soon as this leg is done.

  4. 4

    Leg 2 — turn and walk straight away

    Turn round safely and walk back to the far end, away from the camera. Tap the arrow again at the end.

  5. 5

    Leg 3 — walk across the frame, side-on

    Now walk across the picture from one side to the other and back, so the camera sees you from the side. This is the leg that measures your knee bend and arm swing, because those are only visible in profile.

  6. 6

    Stop and check

    Stop the clip. The app tells you how many clear steps it found. It works out on its own which parts of the clip were face-on and which were side-on, and it throws away the turns and the pauses — so a slightly messy clip is usually still fine.

  7. 7

    Generate the report

    If the tracking confidence came back low, retake before spending the credit. A retake at this point is free.

Watch out for: Walking "properly". The moment you think about walking, you stop walking normally — people slow down, shorten their steps and swing their arms less. Pick a spot at the end of the walkway, look at it, and just go there. If the first clip feels self-conscious, retake it; the second one is almost always more honest.

Before it takes your credit: A report needs at least six clearly tracked steps and at least three seconds of usable walking, and it will not build one from a clip whose tracking confidence came back low. If you get that message, walk a longer pass with your whole body in the frame and follow the arrow.

6Take a ROM scan

Taking a Range of Motion scan, step by step

Pick the body part that bothers you. The app hands you a checklist.

Range of Motion · Three to six minutes, depending on the area

  1. 1

    Pick the area that is bothering you

    Shoulder, Neck, Knee, Hip, Elbow or Trunk. You pick the area, not individual movements — the app already knows every movement that area needs and lines them up for you.

  2. 2

    Choose both sides, or one

    Both is the default and usually the right answer, even when only one side hurts: the good side is the fairest comparison you have. Movements that have no sides, like bending your neck forward, are done once.

  3. 3

    Work down the checklist

    Each step tells you three things: which view to stand in (facing the camera, side-on, or back to it), how to start, and what to do. Read all three before you move. Save a reading and it advances to the next step on its own.

  4. 4

    Move slowly, and pause at the end

    Slow and smooth, right to the edge of comfortable — then hold still there for a moment. The app is looking for a steady reading it can trust, and a movement you snap through gives it nothing to hold on to.

  5. 5

    A special note for neck bending

    For neck flexion and extension, start with your head level, tap Track, and keep still for a second before you move. That first still moment is recorded as your zero. Move too early and every degree afterwards is measured from the wrong starting point.

  6. 6

    Turn once, not six times

    The checklist is ordered so all the movements that need the same view happen together, and within a side-on view one whole side is done before you turn around. Follow the order and you turn around once.

  7. 7

    Generate the report

    Each saved reading carries its own tracking quality. A reading the app is unsure about is flagged rather than quietly included — retake that one step rather than the whole session.

Watch out for: Forcing it. There is a reference range printed next to every movement and it is very tempting to chase it. Do not. A range of motion measured through pain is not your range of motion, it is your pain tolerance, and it makes the reading useless for tracking. Move to the edge of comfortable and stop there.

Before it takes your credit: At least one movement needs five or more good samples at a tracking quality of 60 or better before a report can be built. In practice that means holding the end position still for about a second.

7Profiles & comparing

Profiles, family members and comparing scans

The part almost everybody skips, and the part that makes the second scan worth taking.

  • Every report is filed under a person, not an account

    The first thing the app asks is whose body this is. "Myself" fills the whole form in one tap. "Someone else" lets you save your mum, your partner, your training client — each with their own record, their own name on the report, and their own email address for when the PDF gets sent.

  • Saved people are saved properly

    Everyone you scan gets a record of their own with a permanent ID. Next time, you pick them from a list instead of retyping anything, and every report they have ever had sits together under their name. Before this existed, scanning your mum twice produced two reports that looked like two strangers.

  • Your second scan is compared with your first

    When the person you picked already has a report of the same kind, the app offers to compare. Say yes and the new report is built against the old one — every measurement shown as now, then, and the difference, with an arrow for the direction it moved.

  • It knows the difference between change and noise

    A camera measurement wobbles a little every time, so a report that flagged every half-degree would flag everything. Each measurement has a floor it has to clear before the change is called real. Anything smaller is reported as unchanged rather than dressed up as progress.

  • You can choose to start fresh instead

    Sometimes comparing is the wrong thing — a new injury, a year gone by, a different body. There is a "start fresh" option that builds the report on its own merits, with no reference to the old numbers.

  • The report is the thing you hand over

    Every report downloads as a PDF with the measurements, the reference bands and the plain-English part included. You can email it from inside the app, and it goes to the address on that person's record — not automatically to whoever owns the account.

Here is the whole trick: pick the same person, wear the same thing, stand in the same spot, and scan again in six to twelve weeks. One scan tells you where you are. Two tell you which direction you are going, and that is the only thing you can actually act on.

8Read your report

How to read your report without a physiotherapy degree

Start at the top. It was written for you before it was written for a clinician.

  1. General impression — start here

    Plain sentences, no jargon: "Your right shoulder sits a little lower than your left. This can happen when a bag is carried on one side, or when one side is doing more work." It says what was seen and offers possible reasons as possibilities, never as findings — because a camera genuinely cannot know the cause.

  2. A couple of exercises, by body area

    Named by body area rather than by muscle, so you come away knowing "my upper back needs work" and two things to try, instead of a list of Latin names you cannot use. They are general movement suggestions, not a treatment plan written for you.

  3. The alignment index, out of 100

    One number summarising how level and centred you stood. Useful for watching a direction of travel across several scans. It is a summary the product invented to be readable — it is not a health score and no clinic anywhere will recognise it.

  4. The measurements themselves

    Each one in degrees, with the reference band it is being judged against and which view it came from. Open the detail on any line to see how it was worked out and where the reference comes from. The Detailed report also plots each measurement against its threshold, so you can see how close to the edge it is.

  5. Tracking confidence

    A percentage attached to readings, and it means one specific thing: how clearly the software could see your landmarks. High confidence on a wonky number means the wonky number is real. It is a statement about the picture, not about your health.

  6. Blanks mean "not measured"

    If a value is missing, the app did not have enough evidence to state it — because a foot was out of frame, or a view was skipped. A blank is never a zero, and it never means "perfect". Retake that view if you want the number.

  7. What changed since last time

    On a compared report, every line shows now, then and the difference, with the direction it moved. Small differences that fall under the noise floor are shown as unchanged on purpose.

  8. The PDF, and one thing to do straight away

    Download the PDF during the session if you want the annotated pictures — the ones with the lines drawn on your body. Those images live only in your phone's memory for the current session and are gone once it closes. The saved report keeps its measurements and its written explanation forever; the pictures are yours to keep or not.

If anything in the report worries you, or something has been hurting for more than a couple of weeks, take the PDF to a physiotherapist or doctor. That is exactly what it is formatted for: real measurements, the reference each one is judged against, and a plain statement of how it was taken. It saves the first ten minutes of the appointment, and it gives them a baseline from before you started treatment.

9Basic or Detailed

Basic or Detailed — which report should you buy?

Same measurements either way. The difference is how much explaining comes with them.

Basic Scan

₹99

Your numbers, explained simply

  • Every angle measured, your alignment score, and the annotated photographs.
  • A plain reading of each number — what is typical, and what is not.

Detailed Clinical Report

₹249

Full written clinical interpretation

  • Everything in Basic, plus each measurement plotted against the threshold it is judged by, and where that threshold comes from.
  • A written clinical interpretation: likely causes, what to do next, and what a physiotherapist would check.

Scanning more than once? 5 detailed reports cost ₹1,000 — ₹200 each — and 10 cost ₹1,800, or ₹180 each. Credits never expire and can be spent on any of the three scans, for yourself or anyone you have saved.

You pay before you scan, but you are only charged for a report. A credit is deducted the moment a report is generated — never for a scan you abandon, a capture the app refuses, or a retake.

No subscription. There is nothing to cancel.

10If it goes wrong

If something goes wrong

Every complaint we get, and what to do about it.

What the app said, and what to do

  • "Keep your whole body visible, including both feet."

    Something is out of frame or hidden. Step back, or raise the phone a little. Both feet and the top of your head must be inside the picture with a bit of room to spare.

  • "Step back slightly so your head and feet have space around them."

    You are filling the frame edge to edge. Half a step back is usually all it takes.

  • "Move a little closer while keeping your whole body visible."

    You are too far away for the tracking to place your joints accurately. Walk in a step.

  • "Turn sideways, with one shoulder facing the camera."

    You are in the side view but still facing forward a little. Turn a full quarter-turn on the spot.

  • The app keeps refusing to take the photo

    The phone is not level. Look at the big word on screen — it tells you which way to tip it. Prop it against something solid rather than balancing it; a phone that shifts between views measures three different bodies.

  • The level guide is not showing anything

    On an iPhone you have to tap "Level" once to allow the tilt sensor. If the device has no tilt sensor at all, switch the grid on and line a grid line up with a door frame or a wall corner instead.

  • The tracking keeps dropping out

    Usually light or background. Face the light instead of having it behind you, find a plainer wall, and tuck loose clothing in. There is also a "Retry tracking" button that reloads the detector.

  • I am scanning alone and cannot reach the button

    Turn on auto-capture, or set the self-timer to 10 seconds, before you walk into frame. Voice guidance will read the prompts to you from across the room.

  • "Record a longer walk…"

    The clip did not contain six clean steps. Walk a longer straight pass, keep your whole body in frame, and follow the arrow through all three legs before stopping.

  • My walking numbers look wrong

    Check the tracking confidence first. Low confidence usually means the camera lost you — a cluttered background, a dark room, or a walkway too short for a steady rhythm to develop.

  • My neck angle looks far too big or too small

    The zero was set while you were already moving. Start with your head level, tap Track, stay still for a second, then move. Retake just that step.

  • I started a scan and gave up halfway

    Nothing was charged. A credit is only spent when a report is actually generated, so an abandoned scan costs you nothing.

  • The camera never asked for permission

    Your browser remembers a previous "block". Tap the padlock or the camera icon in the address bar and allow the camera for this site, then reload.

Still stuck? Write to info@myfloww.in or use the contact form. Tell us which scan you were taking and what the screen said.

11Safety & limits

Staying safe, and what a camera cannot see

The honest bit. Read it before you read your numbers.

While you scan

  • Stop immediately if you feel pain, dizziness or unsteadiness. No measurement is worth an injury, and a movement done through pain is not measuring what you think it is.
  • Never force a joint to reach the reference range printed beside it. Those ranges describe adults in general, not you in particular.
  • Keep something solid within reach during the standing hold and during any balance-adjacent movement — and skip it entirely if you are unsteady.
  • The person being scanned must be 18 or older, must be able to complete the task comfortably, and must agree to being recorded. The app asks you to confirm all three before the camera opens.
  • If you are pregnant, recovering from surgery, or have been told to avoid certain movements, follow that advice rather than this checklist.

What a camera cannot see

  • A camera estimates angles from the landmarks it can see. It does not measure bone, joint surfaces, discs, nerves or muscle, and it cannot find the cause of pain.
  • This is a screening measurement, not a laboratory one. A movement lab uses markers, calibration and a technician; this uses one phone and good instructions, and is honest about the difference on every line it prints.
  • The reference ranges are provisional adult ranges. Being outside one is a prompt to look closer, not a verdict — plenty of people sit outside a band and have no symptoms at all.
  • Nothing here is a diagnosis, a treatment plan, or a substitute for seeing a qualified physiotherapist or doctor. Persistent, worsening or severe symptoms need a person, not a phone.

12Your photos

What happens to your photographs

You are pointing a camera at your body. You deserve a straight answer.

  • The tracking runs on your phone

    The skeleton you see drawn over the picture is computed inside your own browser. Those camera frames are not uploaded anywhere.

  • Your photographs are not stored by us

    They are not written to our database or our file storage. They stay in your phone's memory for the current report and are discarded when the scan session closes.

  • What is kept is the measurements and the report

    The numbers, the written report, what you typed in the context boxes, and your account details. That is what lets your next scan be compared with this one.

  • Detailed reports send numbers, never pictures

    The written clinical interpretation is generated from the measurements and your context. The photographs are not sent to that service. Basic reports are produced without any AI request at all.

  • Nothing is sold, and no clinic can see a self-scan

    Your data is never sold or used for advertising, and a scan you took yourself is not visible to any clinic using the professional product.

  • You can ask for it back, or for it to go

    You can see, correct or delete what is held. Delete your reports or your account in the app, or write to us and we will answer within 30 days.

The full detail, including how long anything is kept and who else ever sees it, is in the privacy policy.

13Word decoder

The word decoder

Every bit of jargon your report can throw at you, in one place.

Biomechanics
The study of how bodies move, treated as a machine made of levers and hinges. That is all your report is doing: measuring the angles of the levers.
Posture
How you hold yourself when you are not thinking about it. The scan measures the version you actually use, which is why you should not pose.
Gait
Your walking pattern — the rhythm and shape of how you move on foot. Everyone has one, like handwriting.
Range of motion (ROM)
How far a joint can move, in degrees. Your elbow going from straight to fully bent is roughly 145 degrees of range.
Cadence
How many steps you take per minute. Most adults walk somewhere around 100 to 120.
Stride and step
A step is one foot to the other. A stride is the same foot twice — so one stride is two steps.
Symmetry / asymmetry
How closely your left matches your right. A small gap is normal in everybody; a large one is worth a look.
Pelvis / pelvic tilt
The pelvis is the bowl of bone your legs hang from, roughly at hip height. Pelvic tilt is whether it sits level or is higher on one side.
Trunk
Your torso — everything between your hips and your shoulders, not counting arms, legs and head.
Trunk lean
Whether your upper body leans to one side, or forward and back, relative to your hips.
Forward head carriage
How far your head sits in front of your shoulders instead of stacked on top of them. The pattern people call "text neck".
Plumb line
An imaginary vertical line. Seen from the side, ear, shoulder, hip and ankle ideally stack near it. Your report measures how far from vertical yours sits.
Flexion and extension
Flexion is bending a joint; extension is straightening it. Curling your arm is elbow flexion, straightening it is elbow extension.
Abduction and adduction
Abduction is moving a limb away from the middle of your body — lifting your arm out sideways. Adduction is bringing it back.
Internal and external rotation
Twisting a limb inwards or outwards at the joint, like turning your palm to face backwards and then forwards while your elbow stays put.
Lateral flexion
Bending sideways. Tipping your ear toward your shoulder is neck lateral flexion.
Valgus and varus
Which way a knee drifts. Valgus is inward, toward the other knee; varus is outward, bow-legged.
Postural sway
The small amount everybody drifts while trying to stand perfectly still. Measured during the optional 15-second hold.
Frontal and sagittal
Two ways of looking at a body. Frontal is from the front or back; sagittal is from the side. Some things are only visible from one of them, which is why the posture check takes three views.
Reference range / screening band
What is typical for adults in general for that measurement. Outside it means "worth a closer look", not "broken".
Tracking confidence
How clearly the software could see your joints in that capture. It describes the photograph, not your health.
Baseline
Your first scan — the thing every later scan gets compared with. Taking a baseline while nothing hurts is the most useful scan you will ever take.

14Questions

Questions people actually ask

The ones that arrive in our inbox most often.

Which scan should I take first?

The Body Posture Check, unless something specific is wrong. It covers your head, shoulders, pelvis, trunk and knees in one go, takes about two minutes, and makes the most useful baseline to compare everything else against. Pick Gait instead if your problem only appears while you walk, and Range of Motion if one particular joint will not move properly.

Do I need anyone to help me?

Not for a posture check — switch on auto-capture or the self-timer before you walk into frame, and turn on voice guidance so you can hear the prompts from across the room. A gait analysis is much easier with a second person, because someone has to tap the arrow as you change direction. Range of Motion is possible alone but easier with a helper tapping Track and Save.

How far away from the phone should I stand?

Two and a half to three metres — about four big steps. Your whole body has to be in the picture, from the top of your head to both feet, with a little space around them. The app tells you to move closer or step back if you are not in the right place.

How should I prop my phone?

Upright in portrait, roughly level with your hips, resting against something solid so it cannot shift. The app checks the phone's own tilt sensor and refuses to capture while the phone is leaning, because a leaning camera makes a level body look crooked. A big word on screen tells you which way to tip it.

What should I wear?

Close-fitting clothes, with any loose top tucked in, and long hair tied up so your neck and shoulder line are visible. Barefoot or flat shoes are both fine — but use the same one every time, because footwear changes how you stand and walk. The app asks which you chose and prints it on the report.

Can I scan someone else, like a parent or a client?

Yes. The app asks whose body is being scanned before the camera opens, and everyone you scan is saved as a person of their own with their own ID, their own name on the report and their own email address for sending the PDF. Pick them from the list next time and all their reports sit together. They must be 18 or older and must consent to being recorded.

How do I compare a new scan with an old one?

Pick the same person at the start of the scan. If they already have a report of that kind, the app offers to compare, and comparison is the default. The new report then shows every measurement as now, then and the difference, with the direction it moved. There is also a "start fresh" option for when the old numbers are no longer relevant.

How often should I scan?

Every six to twelve weeks is plenty for tracking a change, and sooner only if something has clearly changed. Bodies do not move measurably in a week, and scanning more often mostly measures the small wobble in the measurement itself rather than anything about you.

What if my report shows something outside the normal range?

It means that measurement is outside what is typical for adults in general — it is a prompt to look closer, not a diagnosis. Plenty of people sit outside a band with no symptoms at all. If it lines up with something that has been hurting for more than a couple of weeks, take the PDF to a physiotherapist or doctor.

Why is one of my measurements blank?

Because there was not enough evidence to state it — usually a foot out of frame, a skipped view or tracking that dropped out. A blank is never a zero and never means "perfect". Retake that view in better light with your whole body in the picture.

What is the difference between the Basic and Detailed report?

The measurements are identical. Basic (₹99) gives you every angle, the alignment index, the annotated photographs and a plain reading of what each number means. Detailed (₹249) adds each measurement plotted against the threshold it is judged by, where that threshold comes from, and a written clinical interpretation covering likely contributors, what to do next, and what a physiotherapist would check.

What happens if I start a scan and stop halfway?

Nothing is charged. You buy a credit first, but the credit is only spent when a report is actually generated — so an abandoned scan, a retake, or a capture the app refuses all cost you nothing.

Are my photographs uploaded?

No. The pose tracking runs inside your own browser and those camera frames are not uploaded. Your photographs are not written to our database or file storage; they stay in your phone's memory for the current report and are discarded when the session closes. Download the PDF during the session if you want to keep the annotated pictures.

Do I need to install an app?

No. It runs in your phone's browser. You need a free account with a verified email address so your reports have somewhere to live and can be compared next time.

Is this safe if something already hurts?

Stop the task if you feel pain, dizziness or unsteadiness, and never force a joint to reach the reference range printed beside it. A range measured through pain is not your range of motion. If you have been told to avoid particular movements, follow that advice rather than this checklist.

YOU KNOW WHAT TO DO NOW

Prop the phone. Take the baseline.

The most useful scan you will ever take is the first one, taken while nothing much hurts. Everything after it is measured against that. ₹99 for a Basic report, ₹249 for a Detailed one. Account needed, no subscription.

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Last reviewed 21 September 2026. Libria is a screening tool by MyFloww. It does not diagnose, treat or replace a consultation with a qualified physiotherapist or doctor.