Film one set.
Get one thing to fix.
On-device form analysis for the squat, deadlift, and bench press. FormCheckMate finds the single highest-priority fix in your set — and tells you when it can't be sure.
- Analysis runs on your device
- Your video never leaves your phone
- Squat · Deadlift · Bench press
How it works
Record, correct, retry, compare.
Most form apps hand you a list of everything that's wrong. That's not how anyone gets better. FormCheckMate runs a loop instead.
- 01
Film a set
Prop your phone side-on. The app shows you where to stand and checks your framing before you lift, so you don't find out the angle was wrong after the set.
- 02
Get your one thing to fix
Not twelve problems. One correction, ranked by how much it actually matters, with the cue to think about and a drill to try.
- 03
Retry with the cue
The cue stays pinned on screen while you film your next set. No memorising it between sets, no rewatching footage in the rack.
- 04
See what actually changed
Before and after, matched at the same point in the rep. The verdict comes from the form measurement itself — never from whether the lighting happened to improve.
What it checks
Twelve checks across three lifts.
Every check is a biomechanical rule running over the pose data from your video. Each one has a name, a threshold, and a reason — nothing is hidden behind a score.
Back squat
3 checks
Depth
Hip crease relative to the knee at the bottom.
Forward lean
Torso angle through the ascent.
Bar path
Horizontal drift of the bar over the midfoot.
Conventional deadlift
4 checks
Early hip rise
Hips shooting up before the bar leaves the floor.
Setup bar distance
How far the bar sits from the shins at the start.
Bar path
Drift away from the body on the pull.
Lockout hyperextension
Leaning back past a neutral finish.
Bench press
5 checks
Elbow flare
Upper-arm angle relative to the torso.
Bar path
The press groove from chest to lockout.
Touch position
Where the bar meets the chest each rep.
Bounce
Using the ribcage to rebound out of the bottom.
Feet off floor
Losing the base of support mid-set.
The part nobody else says
It tells you when it can't tell.
A pose model looking at a phone video does not see everything. Most apps paper over that and produce a confident number anyway. This one refuses to.
Partial results, not invented ones
If your knees are hidden or the angle is off, the app reports that aspect as not assessed — with the reason and how to fix the setup — instead of guessing at a score.
Better lighting is not better form
Improvement is measured from the form itself. A clearer video raises detection confidence, which is reported separately, so a sharper camera never gets counted as progress.
Side-on, or not at all
The analysis is only valid from a fixed side view. If the framing is poor, you're asked to re-record rather than handed a number that doesn't mean anything.
Privacy
Your video stays on your phone.
- Pose detection is on-device
- Apple's Vision framework extracts the keypoints locally. The video file is never uploaded, to us or to anyone else.
- Only findings leave, never footage
- To write the coaching text, the app sends structured findings — the lift, the scores, the names of detected issues. Never the video, never an image.
- Delete it whenever
- One tap in Settings removes every session from the device immediately.
Pricing
Start free. Upgrade if it earns it.
Free
$0
- 3 analyses per week
- 7 days of session history
- All three lifts, all twelve checks
- The full record → correct → retry loop
Pro
$79.99/ year
3-day free trial
or $6.99 / week
- Unlimited form analyses
- Full progress history and trends
- Side-by-side reference comparison
- Personalized coaching after every set
Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings.
Questions worth asking
Why does the camera have to be side-on?
Depth, torso angle, and bar path are only measurable from the side. Testing showed pose detection holds up well from a fixed side view and collapses when the camera moves, so the app enforces the setup that actually works rather than pretending any angle is fine.
Does this replace a coach?
No. It measures a specific set of things from a video and tells you which one to work on first. A coach sees load management, programming, your history, and everything happening off-camera. FormCheckMate is for the sessions you train alone.
Which lifts are supported?
Back squat, conventional deadlift, and flat barbell bench press. Nothing else for now — each lift needs its own rules, and shipping a lift with weak rules would be worse than not shipping it.
What data leaves my phone?
Structured findings only: the exercise, the scores, and the names of the detected issues, which are used to generate the written coaching. Your video is analyzed on-device and stays there.
Does it work without internet?
The analysis does — pose detection and every rule run locally. Without a connection you still get your score, your findings, and your priority fix; the written coaching falls back to built-in text instead of being generated.
Is this medical or injury advice?
No. It's automated technique feedback for information only, not medical advice, physical therapy, or a substitute for a qualified coach. Train within your limits.