Guide
How to choose a camera form-check app
Last updated 14 October 2026
Disclosure: Upfit makes one of the apps in this guide. We have tried to keep the page fair. It does not rank anything, and Upfit is one row in the table with its weak spots listed. Every fact about another app comes from that app's own App Store listing, not from our testing.
This guide is for anyone who wants a phone camera to count reps or watch form while they train, and is trying to work out which kind of app fits. It gives you the questions to ask, then shows what seven listings say so you can compare them yourself.
8 questions to ask before you choose
- iPhone or Android? Check the store page for your phone. Many of these apps are on one platform only.
- Which exercises does it check? Some cover one lift, such as the squat. Others list hundreds of moves. Check that your exercises are on the list, not just that the app says "AI".
- Does it count reps out loud and speak cues? If you will be several feet from the phone, spoken counts and corrections matter more than on-screen text.
- Does your video leave your phone? Look for a clear statement that processing happens on the device, and for what is stored or synced if you pay.
- Does it work without equipment? Some apps are built around barbells and dumbbells. Others only use bodyweight moves.
- What is the price model? Free, free with ads, subscription or one-time purchase. Read it on the listing, including what the free version limits.
- Front or side camera? Some checks need the phone side-on, others face-on. Make sure the app's set-up suits the space you have.
- Does it work offline? Check whether you need a connection to start a session, and which features need one.
Seven apps, as their own listings describe them
| App | Platform | What its listing says it checks | Spoken cues? | Video stays on device? | Price model per listing |
|---|---|---|---|---|---|
| FormLab (App Store ID 6758761079) | App Store listing; iPhone camera | Squat form: knee valgus, depth, forward lean, heel rise, left-right asymmetry, butt wink, hip mobility. Side and front views. | Not stated | Says form analysis and video processing stay on-device; workout videos are not uploaded. Pro workout records may sync to its server. | Free to download. Listing describes a one-time Pro purchase (removes ads, unlimited reps, history, recording). |
| Form Coach: Camera Rep Counter (6770110788) | App Store listing; iPhone, with an Apple Watch mirror | Rep counting and per-rep form scoring; claims cues on 500+ movements, including dumbbell, kettlebell and band work. | Yes (voice and haptics) | Yes: says all camera work is on-device and nothing is uploaded. | Free. Says no subscription, no ads, no paywalls. |
| Skeletal PT - AI Rep Counter (6757767729) | App Store listing; iPhone camera | Rep counting and form checks such as back rounding, knee cave, squat depth, tempo and range of motion; lists 500+ exercises including barbell lifts. | Listing mentions voice coaching | Yes: says no video uploads and no cloud processing. | Free to start; listing describes an upgrade to Skeletal Pro (billing type not stated in the text). |
| Squat Form Counter: AI Reps (6791916161) | App Store listing; iPhone front camera | Squats only: counts a rep when you squat low enough and says "Go deeper!" when too shallow. | Yes (counts reps out loud) | Yes: says everything runs on the device and recorded videos stay on the phone. | Free with ads; one-time purchase removes ads. |
| Real Squat (6759639557) | App Store listing; iPhone camera, phone placed to the side | Squats: depth, back straightness and hip hinge, with easy, normal, strict and custom modes. | Listing mentions voice coaching in English and Japanese | Says no internet needed and no data sent to servers. Video specifically: not stated. | Free. No paid tier is mentioned in the listing text. |
| Repmirror (6753352161) | App Store listing; iPhone camera | Real-time form feedback and rep counting inside a wider workout planner and tracker; bodyweight and equipment exercises. | Not stated for form cues (listing says rest timers sound through earphones) | Says AI processing happens on the device. Video upload: not stated. | Free to start; Pro and Premium upgrades. Listing says form analysis is in Premium. |
| Upfit (App Store ID 6762553716) | iPhone only | Per-exercise rules (for example squat depth and stance) across bodyweight moves in a fixed 15-move session. | Yes (counts reps and speaks corrections) | Yes: camera frames are processed on the phone and never recorded or uploaded. | Free to download; every new account gets 3 days of full access with no card, then a monthly or yearly subscription. The yearly plan starts with a 7-day free trial. |
Other points the listings make: Real Squat says it needs no internet, and Repmirror says workout logging works offline. FormLab describes side and front views. Real Squat asks you to place the phone to the side. Upfit's own row comes from its product documentation and its App Store listing, which went live on 8 October 2026. We did not install or test any app, so these rows describe claims, not measured results.
Where Upfit is weaker
- iPhone only. There is no Android version, iPad version or web app.
- English only.
- One fixed session format: 15 bodyweight exercises of about 15 to 20 minutes. You cannot build your own routine.
- It needs an internet connection to start a workout.
- It does not track weights or barbell lifts.
- It is a subscription, not a free or one-time purchase app, and it is not downloadable until App Review finishes.
If you want one lift checked in detail, a barbell tracker, an Android app or a free app, one of the others above may suit you better. See how Upfit works and what Upfit can't check for more.
What none of these apps can do
- They are not medical devices. They cannot diagnose an injury, clear you to exercise or replace a physio or doctor. If something hurts, stop and ask a professional.
- One camera sees one angle. Depth, rotation and joints hidden from the lens are harder to judge from a single view, and lighting, clothing and phone placement affect tracking.
- A rule-based or AI check is an estimate. Treat a cue as a prompt to look at your technique, not a verdict.
Sources
Each competitor row uses only the text of that app's UK App Store listing, read on 2 October 2026 through Apple's public lookup API (country GB), using the App Store IDs shown in the table. The listing for "FormLab" is the one under that exact name. The Upfit row comes from Upfit's own product documentation. Developers: if a row is out of date, tell us through support and we will fix it.