TrainWiz

TrainWiz is a fitness app that turns real workouts into a pet-raising game — powered entirely by on-device AI.

Prop up your phone, point the camera at yourself, and do a few squats or push-ups. A pose-estimation model running locally on your phone counts your reps automatically — no wearables, no manual logging, and no camera footage ever leaves your device. Privacy is built in by design.

Every rep feeds your buddy: it gains XP, builds a daily streak, and evolves from hatchling to fully grown as you keep showing up. Skip a day, and it gets a little lonely — a gentle nudge, not a guilt trip.

It's built for people who can't stick with fitness apps: beginners, busy people, anyone whose motivation dies by week two. No gym, no equipment, no 60-minute plans — bite-sized daily quests you finish in about a minute. You can also invite a friend and work out together in a live co-op session, with both cameras counting reps in real time.

Why it works: caring for something cute is a much stronger habit loop than streaks and guilt. The AI removes all friction from tracking, so the only thing left to do is move.

Free on iOS and Android; an optional Pro subscription unlocks higher pet levels and co-op hosting (joining is always free).