# Movement Tracker+

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Haitian Zhu](https://cerebralvalley.ai/u/Kiraguri)
- **GitHub:** https://github.com/kiraguriz/movement-tracker-plus
- **Demo video:** https://www.youtube.com/watch?v=dybd1nn7-no
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4663

Movement Tracker+ is a native iOS app (SwiftUI, Swift 6, iOS 27) for people who train alone, at home or in a dorm gym, without a coach. It watches your set through the iPhone camera, counts every rep on-device, measures depth, tempo and fatigue per rep, and has Meta's Muse model turn those numbers into coaching, plans and nutrition logging.

How it works:
- Frame yourself side-on with the front or back camera. Counting starts only once the joints the exercise needs are confident, clear of the frame edge and held for a second.
- Live set: reps, partial reps and a depth gauge update on-device, with at most one spoken cue per rep. Built-in exercises: bodyweight squat and push-up.
- Set review: per-rep measurements first, then a Muse review that cites reps by number.
- Coach chat: answers from your own training and nutrition data through on-device tools; plans and meals come back as proposals you confirm.
- Meal photo: Muse names the foods and estimates grams, USDA FoodData Central supplies the nutrients, you edit and save.
- Today: the day's nutrition, latest workout, weight trend, and a readiness estimate from Apple Health recovery readings with a suggestion to train, go easy or rest.
- Teach a new exercise by demonstration: do a few reps and say how many; it is saved as a counted exercise only if replaying the demonstration through the engine reproduces that count.

Also shipped: workouts, meals and weight written to Apple Health; a Live Activity for the workout in progress; App Shortcuts and Siri; rest alerts; English and Simplified Chinese.

Muse never counts reps. The on-device numbers are the source of truth; Muse explains them.

## More from Meta Global AI Developer Hackathon

- [OdeMuse](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4660)
- [MAV | Mobile Agentic Vision](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4661)
- [Video2Sim](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4662)
- [Jayly](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4664)
- [SLVRLeaf Digital](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4665)
- [SN2.0](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4666)

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