Knees caving in
Knee drifts inside the hip–ankle line at the bottom.
Trigger medial knee shift > 0.10
Fix: push your knees out over your toes.
AI form coach
They show you how. We see how you move.
Point your phone camera at yourself. The coach counts your reps, scores your form and tells you what to fix while you train.
- 4
- coach voices to train with
- 0
- video frames leave your phone
- 33
- body points tracked on device
- $0
- to start on Android
Knees out ✓Depth ✓
Squat · good rep
Knees track over your toes. Now stand up tall.
On your phone
What you get on your phone
Form reportWhat went well and what to fix, after the workout 
AI coachAsk about your form, plan and recovery 
Weekly planPick the minutes, get the sessions 
Exercise libraryFilter by muscle group and equipment
How it works
Three steps, no wearables
1
Set your phone down
Floor or shelf, about two meters away. The coach checks that your whole body is in frame.
2
Train with your plan
Pick your workout and start. Reps are counted for you, out loud, so you never lose track.
3
Fix one thing per set
Each rep gets a quality score. You hear the one cue that matters most, then see the trend after.
What the camera catches
Knees, back, depth, core — flagged as you move
Video apps play a demo and hope you copy it. Here the engine measures your joint angles every frame, so it knows when your knees cave, your back rounds or you cut the rep short.
See squat mistakesRounded lower back
Torso angle collapses as you stand up.
Trigger back angle < 148°
Fix: brace your core before each rep.
Unstable core
Your torso wobbles or the movement suddenly speeds up mid-rep.
Trigger back angle swings > 10° or speed jumps 2× your average
Fix: brace and keep your chest still as you move.
Try the rules
Move the sliders, see what the coach flags
A squat has three checks the camera makes on every rep. Change the numbers and watch each one turn from a tick to a warning at the same limits the app uses. The green stretch of each bar is the range that passes.
Knee angle at the bottom: 90° or less
Back angle stays at 148° or more
Knee drift inside the line: 0.10 or less
A model that explains the rules, not a recording of the camera. The limits are the ones in the app's squat check.
Beyond the camera
More than a rep counter
Plans that adapt
Load is adjusted from your recent training and recovery: a deload week when fatigue builds up, more when you are ready.
Food scan
Photo or barcode to calories and macros in seconds. Protein, carbs and fat tracked against your goal.
Voice coach
Counts out loud and calls the cue mid-set, so your eyes stay off the screen.
Why it is different
How it compares
| Video workout apps | Gamified AI apps | AI Fitness Coach 360 | |
|---|---|---|---|
| Sees your form in real time | No — demo video | No — 3D model | Yes, every rep |
| Counts reps for you | No | Timer-based | Yes, by camera |
| Nutrition tracking | Separate app | Separate app | Built in |
| Equipment | Varies | None | None — your phone |
Exercise form guides
Proper form, common mistakes and exactly how the camera judges each one.
Free calculators
No sign-up. The numbers you need to plan training and food.
Inside the app
What else the app does
The camera is the reason people come. These are the reasons they stay.
Digital twin
A living model of your body and training: weight and composition, weekly volume per muscle group, weak links, recovery and overtraining risk.
Streaks, XP and 21 badges
Earn XP for quality reps, keep your streak alive, unlock 21 achievements and compare yourself on real leaderboards.
Progress reports
After every session: quality ring, volume, trends against your previous sessions, and what to change next time.
Programs from trainers
Buy a program from a certified trainer inside the app, then run it with the same camera form check.
Community feed
Share a session, rate other people's workouts, get featured as Coach of the Week.
Offline travel packs
Download one of 6 workout packs before a trip and train with no connection at all.
Refer a friend, get 7 days of Pro free. They get the app, you get a week of everything.
Get the appPlans
Start free, upgrade when it clicks
Free
$0
- 3 workouts a week
- Form check on 2 exercises
- 5 food scans a month
Pro
Most popular$12.50 / month
$149.99 billed yearly · 14-day free trial
- Unlimited workouts
- Rep counting and form score by camera
- Unlimited food scans
Elite
$20.83 / month
$249.99 billed yearly
- Everything in Pro
- Digital twin
- Voice coach personas
Coach+
$41.67 / month
$499.99 billed yearly
- Everything in Elite
- Priority AI coach model*
- Custom coach persona
Questions
Do I need any equipment?
No. A phone on the floor or a shelf, about two meters away, is enough. Dumbbell exercises are marked.
Is my camera video uploaded anywhere?
Pose tracking runs on your phone. Video frames never leave the device.
Which exercises does the camera check?
Detailed mistake rules are live for squats, lunges and planks. Other exercises get general form checks; rep counting for them is being verified exercise by exercise.
Can I cancel anytime?
Yes. A plan bought on this site is cancelled or switched in your account under Manage subscription; it stays active until the end of the paid period. A plan bought in the app is managed in Google Play.
Your next set, with a coach watching
Free on Android.