Workout tracker
Real muscle growth comes down to two things: progressive overload and weekly sets per muscle group. BTB makes both visible at a glance — so you train smarter, not just harder.
iPhone · Free to use · Zero ads · Fully offline
The principles
Are your weights and reps truly climbing week to week? See it instantly with per-exercise volume trends.
Are you hitting enough sets per muscle group? Catch undertraining and imbalances before they cost you gains.
Features
See your last session, enter today's weight and reps, save. No friction mid-set.

Visualize volume per exercise. Know whether you're truly progressing, week to week.

Track weekly hard sets per muscle group over any day or date range. Spot over- and under-training and imbalances early.

Export to CSV even on the free plan. We never lock your training history inside the app — your data is always yours.

Pricing
Core features are free — including CSV export.
FAQ
Yes. You can log fully offline. Once signed in, data syncs to the cloud automatically — perfect for gyms with no signal.
Yes. Export to CSV or text even on the free plan. We never lock your data inside the app.
Logging, analysis, export, and cloud sync — all core features are free. Premium unlocks weekly/period sets per muscle group (hard-set totals).
15 languages, including English, Japanese, German, Spanish, French, Italian, Korean, Portuguese, Chinese, and more.
No ads at all — so you stay focused mid-set.