Workout tracker
"Progressive overload of per-exercise volume" and "weekly hard sets per muscle." These two are consistently supported as the factors most strongly associated with muscle hypertrophy.[1][2][3][4]
BTB Workout Log is a training log designed to track only these two metrics — the ones that matter most for muscle growth.
No social feed, no rest timer, no how-to videos, no templates: leaving them out keeps the whole app simple, so you can focus on logging and analysis.
iPhone · No signup to start · Free · Zero ads
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.
LIVE DEMO
No install. Tap around the actual app with sample data loaded — log sets, open the analysis. Nothing you do is saved.
Runs in your browser · sample data · nothing is saved
Features
Last-time suggestions, a custom keypad, one-tap entry. Log without breaking your training flow.
Volume, weight and reps charted over time. See which lifts are climbing and which have stalled.
Just log weight, reps and sets. Chest, back, shoulders, legs — tallied automatically.
Export to CSV anytime. Your data is yours to keep.
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.
"BTB" stands for "Better Than Before." Turn every single workout into real, measurable progress.
