
Praxis Motion Lab
Biomechanics from your video
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Free
In-App Purchases
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About
Praxis turns any phone video of a movement into a structured biomechanics report — no wearables, no markers, no lab.
Film a squat, deadlift, jump, sprint, or sport skill. Praxis reads the movement from the video and returns a clear breakdown: what's working, what to fix, and why — in language matched to who you are.
WHAT PRAXIS MEASURES
• Joint angles and range of motion through the full movement
• Rep timing, tempo, and velocity
• Left/right symmetry and compensation patterns
• Jump metrics — flight time, contact time, reactive strength
• Sprint and change-of-direction mechanics
• Coaching that ties each cue to the data behind it
BUILT FOR HOW YOU TRAIN
• Athlete — performance-focused cues and programming direction
• Coach — per-athlete profiles and roster-ready summaries
• Clinician — structured, terminology-aware movement observations
• Everyday — plain-language guidance to move and train better
HOW IT WORKS
1. Record or upload a video (single phone is all you need).
2. Praxis extracts pose and computes the metrics on-device.
3. You get an instant, readable report with prioritized coaching.
Optional two-phone capture adds a second angle over your local network for a fuller 3D picture. LiDAR and high-frame-rate capture are supported on compatible devices.
PRIVACY
Your videos are processed to produce your analysis. You control what's saved, and you can delete your account and associated data at any time from Profile. Praxis does not use your data for advertising or tracking.
IMPORTANT
Praxis is an educational movement-analysis and coaching tool. It is NOT a medical device. It does not diagnose, treat, or prevent any condition and is not a substitute for professional medical, physical-therapy, or clinical advice. Always consult a qualified professional for any pain, injury, post-surgical, or return-to-play decision. Use Praxis as one input among many in your training, coaching, or clinical decision-making.
Praxis offers optional subscriptions and analysis credits. Full features are described in-app before any purchase.
Terms of Use (EULA): https://praxisapp.fit/terms
Privacy Policy: https://praxisapp.fit/privacy
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What's New in Praxis Motion Lab
1.5
October 3, 2026
- More reliable purchases: plans and credit packs now load and confirm reliably. - Sign in to buy: plans and credits stay on your Praxis account and sync with the web dashboard. - "How you compare": see your results next to people of your age and sex, with cited sources. - Analysis accuracy fixes and smaller improvements.
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Subscriptions & In-App Purchases
Praxis Pro (Monthly)
Full Pro movement analysis, monthly.
$9.991 Month









