STACK
AI rep counter & all-in-one tracker
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Thomas Bodin

STACK - AI rep counter & all-in-one tracker

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I built STACK from scratch to stop juggling fitness apps. It’s an all-in-one native Android tracker. • AI Rep Counter: Uses phone camera & computer vision to auto-count reps in real-time. • Workout Tracker: Logging, custom timers & routines. • Nutrition: Barcode scanner for macros & calories. • Social: Feed & 1-to-1 messaging. Tech: Native Android, Health Connect, offline mode. I'd love your technical feedback on the AI!

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Thomas Bodin
Maker
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I’m a solo developer who got tired of losing count of my reps and juggling 3 different fitness apps at the gym. So, I built STACK from scratch. It uses your Android phone's camera and computer vision to automatically track and count your reps in real-time. To make it a true all-in-one ecosystem, I also integrated a barcode nutrition scanner, custom workout timers, and a community feed. I built this entirely to solve my own friction points and make workouts brainless. I'd love for you to test the AI tracking capabilities and let me know your technical feedback!
Giodio Mitaart

Very clean idea and execution. If tracking is reliable, the rest of the stack compounds nicely. I'm also actively exercise, will try use this. Congrats!

Thomas Bodin
Maker
@npmitaart, Thank you so much for the support, I hope the features will suit you.
whynot_jee

This is cool — the AI rep counting using camera is!

Love that you built this from your own pain point, that’s always the best products.

Curious how accurate the rep counting is in real gym conditions? (like different angles / lighting)

Thomas Bodin
Maker

@whynot_jee 
Thank you very much for your feedback! For now, the results are quite accurate under standard lighting. While body detection is less precise in low light, it remains reliable; I estimate that about 85% of the detections are valid in dark environments.