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Posture checks, explained
Practical guides on photo-based posture checks: taking consistent photos, reading measurements, and choosing a posture app.
Uneven hips test: why a small difference is common and what a photo cannot tell you
In standing X-rays of 134 adults, median sideways pelvic tilt was 2.0°. What a front photo shows about uneven hips, and why it cannot measure leg length.
Read the guide →Types of posture apps: what photo, webcam and wearable checkers can and cannot see
Posture apps measure you from still photos, a desk webcam or a motion sensor. What each type sees, when it works, its evidence and the question it answers.
Read the guide →What to send a physio or trainer with your posture photos
What to send a physio or trainer: a dated PDF from two steady photos, a short note on why you're asking and how the photos were taken, and privacy checks.
Read the guide →Q angle measurement: why the normal ranges disagree, and where a photo fits
Published normal Q angle limits run from 15° to 22°, depending on the source and on standing or lying down. Why a photo app's Q angle is its own scale.
Read the guide →PoseAlign vs APECS: when a free two-photo app can stand in for APECS, and when it cannot
PoseAlign (our free Android app) vs APECS on price, platforms, views, landmark control, research and PDFs, including where APECS is the stronger tool.
Read the guide →One shoulder higher than the other in photos: your body or the camera?
If one shoulder looks higher in photos, check the camera and stance first. Three repeat photos can show variability, but cannot identify its cause.
Read the guide →Knock knees or bow legs: what a front photo can and cannot show
Ankles together and knees apart points to bow legs; knees touching with ankles apart, to knock knees. How to photograph it, and when to see a doctor.
Read the guide →How to track posture progress with monthly photos and dated PDF reports
Track posture changes at home: repeat the same front and side photos each month, save every PoseAlign report as a dated PDF and compare photos before numbers.
Read the guide →How to take front and side posture photos, using setups from published studies
Take posture photos at home: phone level at waist to chest height, 2.5 to 3 m away, plain wall, fitted clothes, usual stance. Based on published studies.
Read the guide →How to read a posture analysis report in four checks
Read a photo-based posture report in four checks: landmarks first, each value with its unit, highlights as a cue to retake, and changes bigger than error.
Read the guide →How to do a plumb line posture check on a side photo
Draw a true vertical line on a side photo, see where your knee, hip, shoulder and ear sit against it, and learn what this posture check cannot tell you.
Read the guide →How to check your posture at home: a wall check, photos or a posture app
Check your posture at home with a wall check, front and side photos or a posture app: what each one shows, what feel misses and when to see a professional.
Read the guide →How accurate is photo-based posture analysis? What the studies tested and on whom
Photo posture measurements repeat well with a fixed setup, but agreement with X-rays or 3D lab systems varies by measure. What studies tested, and on whom.
Read the guide →Head tilt posture in a front photo: is it you or the camera?
Head tilt posture is a sideways lean of the head. Why a photo can show a tilt the mirror doesn't, how research measures it, and how to check a photo.
Read the guide →PostureScreen alternatives for Android: what the Android version lacks and what free apps include
On Android, PostureScreen is a $19.99 Lite app without computer vision, and its studies tested the iPad version. Free Android apps with PDF reports compared.
Read the guide →Forward head posture angle: what the CVA measures and why app angles differ
Research measures forward head posture with the craniovertebral angle at C7. Study averages, what a side photo can't show, and why app angles differ.
Read the guide →How to choose a free posture analysis app for Android, with 17 apps compared
17 photo-based posture apps on Google Play compared on what free means, photos needed, PDF export, point editing, studies and privacy. Oct 2026.
Read the guide →Anterior pelvic tilt from a photo: what a side view can and cannot measure
A side photo shows your hip outline, not the bony points that define pelvic tilt. In 30 cadaver pelves in one position it still ranged 0–23°.
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