Simple, focused, no distractions. Track your lifts, crush your PRs, and watch your progress unfold.
Download on the App StoreTrack every exercise, set, weight, and rep with a clean day-by-day interface.
Never miss a personal record. Your best lifts are automatically tracked and highlighted.
Get customized workouts based on your focus areas, difficulty level, and training history.
Training volume, intensity trends, 1RM estimates, and muscle heatmaps at a glance.
See which muscles you've trained recently with a color-coded body map for balanced training.
Rest timer, interval timer, and weight converter — everything right where you need it.
From the home screen, tap the "+" button to add an exercise to today's workout. Select your exercise, then add sets with weight and reps. Your workout is saved automatically.
Muscle Diary automatically compares every set you log against your history for that exercise. When you hit a new all-time best, a golden trophy badge appears next to the set.
No. All your workout data is stored locally on your device. Your data never leaves your phone, ensuring complete privacy.
Yes! Muscle Diary supports both lbs and kg. You can switch your preferred unit in the app settings, and use the built-in weight converter tool anytime.
The AI generates workouts tailored to your selected body focus and difficulty level, using on-device intelligence. It considers your workout history to create safe, structured routines. Available on iOS 26+.
Can't find what you're looking for? We're here to help.
Muscle Diary is designed with privacy at its core. Here's what you should know:
If you delete the app, all data stored within it will be permanently removed from your device.