AI spots what you can't.
No wearables. No sensors. Just your camera. Record a set and get a form score, exact joint angles, and a plan to fix it.
Form score
Squat · 5 reps analyzed
Squat depth
Full
Below parallel
L/R asymmetry
4%
Within balance
AI coaching
“Drive your knees out and keep your chest tall.”
Swipe to explore the app →
How it works
Fix your form in three steps
Record, analyze, improve — all with the phone already in your pocket.
Record
Film a squat, bench, deadlift, overhead press, or run — straight from your phone.
Analyze
AI pose detection scores your form and measures joint angles, depth & left/right asymmetry, then writes plain-language coaching.
Improve
Get a corrective plan for your weak points, log your workouts, and watch your form score climb over time.
AI that watches you move
Most apps log what you did. FormLens sees how you moved.
Exact joint angles, squat depth and left/right asymmetry — drawn right on your video, on every rep. Objective analysis you can actually see. No black box.
Knee angle
112°
Features
Everything you need to train smarter
Form analysis, smart logging and personalized plans — all in one app.
Per-rep form score
Every rep scored 0–100, plus an overall for the set — so you see exactly which reps broke down.
Angles, depth & asymmetry
Exact joint angles, squat depth and left/right balance — measured on every rep.
AI video form analysis
Squat, bench, deadlift, overhead press and running — analyzed from a normal phone video.
AI coaching
Your weaknesses, primary issue, and the corrective exercises that fix them.
Corrective plans
A plan built from your measured weak points — not a generic template.
AI plan generation
Personalized, multi-week programs generated for you, plus ready-made templates.
Workout logging & PRs
Fast, Hevy-style logging with full history and automatic personal records.
Exercise library
A full library of movements — add your own custom exercises too.
Progress charts
Form-score trend, training volume and muscle-group distribution over time.
Streaks & consistency
Streaks and consistency tracking that keep you coming back.
July update
The biggest FormLens update yet
Version 1.2.22 is rolling out on the App Store this July. Here's what it adds:
Apple Watch app
Guided workouts on your wrist — log set, rest, next with the Digital Crown, live heart rate, and “Siri, start today's workout.”
Recovery & readiness
A readiness score from your sleep, HRV and resting heart rate — and how recovery affects your form.
Smart loading
Readiness-aware weight suggestions, a one-tap warm-up ramp, and a plate calculator.
Faster logging
Supersets, plus a rest timer on your Lock Screen and in the Dynamic Island.
Your data, portable
Import your history from Hevy or Strong in one tap — and export yours any time. Plus body measurements and progress photos.
6 languages
The app in English, German, Spanish, French, Portuguese and Turkish.
Shipping with version 1.2.22 — not in the current App Store build yet.
All in one
The only app that does all three
Logging apps track what you did. Form-check apps grade a single lift. FormLens does both — then builds your plan.
| Capability | FormLens | Logging apps | Form-check apps |
|---|---|---|---|
| AI form analysis from video | |||
| Workout logging, history & PRs | |||
| Corrective plans from your data | |||
| Just a phone — no wearable |
Why FormLens
We built it to show how you moved — not just what you lifted.
Most trackers count your reps and weight. None tell you whether those reps were any good — so bad habits compound, progress stalls, and small tweaks turn into injuries.
FormLens reads your actual movement from a normal phone video and turns it into a score, exact numbers, and a plan. No wearable, no $80-a-session coach — just the camera you already own.
Quality, not just numbers
Every rep scored on how you moved.
Private by default
No feed, no posting — your training stays yours.
No coach, no wearable
Just the camera in your pocket.
The science
Grounded in movement science
FormLens applies established, peer-reviewed research on how the body moves. A few of the studies behind the approach:
These studies support the principles behind FormLens; they are not studies of the app itself. FormLens is a training aid — not a medical device or a substitute for professional medical or coaching advice.
Pricing
Start free. Upgrade when you're ready.
One free analysis a month, forever. Go Pro for unlimited analysis and AI plans.
Free
Start checking your form today.
- 1 AI form analysis / month
- Unlimited workout logging
- Personal records & history
- Exercise library
Pro
Unlimited analysis + AI plans.
Just $3.75/mo, billed yearly
Go Pro- Unlimited AI form analyses
- AI multi-week plan generation
- Corrective plans from your weak points
- Full progress charts & trends
- Everything in Free
Pro includes a 7-day free trial on the yearly plan — start it in the app. Subscriptions are billed and managed through the App Store.
From the App Store
What early users are saying
“This app is INCREDIBLY GOOD!! I've been using it for 2 weeks — no more back soreness after deadlift, it's a miracle!! Beginner-friendly.”
youngmaster25
★★★★★ · App Store review
“The feedback I get from the AI is keeping me in check and I have never kept a steadier posture. Also the drive it creates by seeing your improvement is borderline addictive.”
Buegue
★★★★★ · App Store review
“Feels like having a personal coach. It catches my form mistakes instantly and explains how to fix them. Easy to use and genuinely improves my workouts.”
ecl35
★★★★★ · App Store review
“The app provides actionable steps to improve the form based on the detailed analysis. I feel much better about my form now.”
Guldenbird
★★★★★ · App Store review
“Been checking my form with this app for a month now, started seeing serious progress.”
Aksel Y.
★★★★★ · App Store review
“Very detailed analysis for my exercises. This is a must for me!”
GymLover1983
★★★★★ · App Store review
FAQ
Questions, answered
Fix your form, faster.
Train smarter. Lift safer. Your AI form coach is one recording away.