How Movus works
Movus turns the iPhone's front camera into a controller. It reads where your body, hands and feet are, many times a second, and each game turns that into a move.
Body tracking, on the phone
Each camera frame goes through Apple's on-device body-pose detection, which finds your joints — shoulders, elbows, wrists, hips, knees. Movus measures everything against your own calibrated pose, so a step means the same thing for a tall adult and a child, near the phone or further away. The frame is then discarded: nothing is recorded and nothing leaves the phone.
Calibration
When a game starts, the calibration screen shows your live outline. Stand where it asks; it turns green when your body is framed and steady, and the game begins. If you step out of frame mid-game, it pauses and asks where did you go? — come back into the outline and a short countdown resumes play.
What each game reads
| Signal | Used by |
|---|---|
| Where you stand (left / centre / right) | Move Rush |
| Crouch and jump | Move Rush, Squat Rush, Boxing |
| Hand positions | Slash, Penalty Hero, Boxing |
| Arm strokes | Swim |
| Upper-body lean | Boxing |
Setting up
- Phone in landscape, at about waist height or above.
- Two to three metres back, whole body in frame.
- A lit room, without a bright window behind you.
The full walkthrough is in how to set up your iPhone.
Calories and Apple Health
Movus estimates active energy from each game's intensity and your own body, and can save every session to Apple Health as a workout. See how the calories are calculated.
Privacy
No account, no recording, no upload. Anonymous usage counts can be switched off in Settings. Read is camera fitness private? and the privacy policy.