Free strength training tracker for iPhone. Build your routines, log every set, and watch yourself get stronger, session after session.
Built for lifters who want serious tracking without the noise.
Log your sets in two taps, auto rest timer, fluid transitions. The app stays at your service, never the other way around.
Progression graphs on every exercise, personal records, estimated 1RM trends. You always know where you're heading.
A selection of pre-configured programs to get started, and full freedom to design your own routines from scratch.
Leave your phone in the bag. Log sets, control your rest timer, and follow your routine directly from your wrist.
No Wi-Fi at the gym? No problem. Start, edit and finish your sessions without a connection. Everything syncs the moment you're back online.
Generate a structured summary of your workouts (up to 100) or have your whole program reviewed, and share it with ChatGPT, Claude or Gemini in two taps. Your profile and computed key numbers (actual frequency, volume per muscle group, records) are included so the analysis is actually relevant. Musku formats your numbers: the analysis itself comes from the assistant you pick.
Weight, body fat, arms, chest, waist, thighs: log your measurements in seconds and follow each one on its own progress chart.
Every finished workout is written to Apple Health, contributing to your activity rings. Body measurements (weight, body fat, waist) sync both ways, connected scale included.
See your volume in sets per week per muscle group. You can tell at a glance which groups you train less than the rest.
Your rest timer ticks down on the lock screen. No need to keep the app open during your set.
The Musku iOS widget puts your workouts one tap away. Pick the medium (4 workouts) or large (8 workouts) size, configure which workouts appear via long-press, and start without even opening the app.
Four screens, four moments of your session.
The home screen tells you where you stand this week and starts your next session in one tap. No menu to explore, no setup before you lift.
During a session, last time’s load sits next to every line. You know what to beat without searching, and you log a set with one tap.
An exercise page brings together how to perform it and your history on it: your records, your estimated 1RM, and how your loads moved over time.
The monthly summary compares this month with the last one and lists every record you beat. This is where you see whether the work is paying off.
Musku does not stop at these four screens.
Start free. Go Premium when you're ready.
Reviews left spontaneously on the App Store.
Your program in a few taps
Excellent training app! Musku is smooth, simple to use and really handy for tracking my workouts day to day. I love how motivating it is, the clean interface, and how easy it is to build your own training plans.
Finally an app that motivates me
Finally a lifting app that makes you want to get started! The interface is super clear, you log a session in two seconds, and the progress charts are so satisfying to look at. Highly recommend!
Efficient and simple
Very handy app for organising and tracking your lifting sessions. You can build your own programs easily. There is a huge number of exercises available, and it is simple and intuitive to pick up.
Excellent app
Really good app, very intuitive. If you are after something complete with a nice design, go for it, you will not be disappointed.
Reviews published on the French App Store, translated from French.
Yes, the core experience is free with no time limit. A Premium subscription unlocks advanced statistics and access to all our pre-made programs. It's optional and supports the development.
Yes. Your workouts are saved locally and synced automatically when you're back online. You can train at the gym without any data signal.
If you enable the sync in the settings, every finished workout is added to the Apple Health app and stays on your device. You can also enable measurement sync: weight, body fat and waist circumference then flow both ways between Health and Musku. Measurements imported this way are saved to your Musku account, just like the ones you type in the app.
Yes, in one tap from the app settings. Everything is wiped: workouts, statistics, account. Permanent and immediate.
Not yet. Musku is currently iOS only, designed natively for iPhone (Live Activities, Apple Health, etc.). An Android version may come later if there's demand.
Musku is built solo by a French indie developer. No investors, no ad networks, just an app dedicated to your strength training.
Free. No ads. iPhone, iOS 15+.
Download on the App Store