Everything Musku does
A complete training log built for the gym: quick to fill in mid-workout, rich to look back on. Here is everything inside.
Features marked Premium are part of the subscription. Everything else is free, with no time limit and no ads.
During a workout
Log your sets without breaking your flow
Your last performance in plain sight
Every set shows what you did last time. You know what to beat without looking it up, and you choose whether it compares across all workouts or the same template.
In detail →Automatic rest timer
Check off a set and rest starts. Duration is set per exercise, from 30 seconds to 10 minutes, and is saved with your template.
In detail →Notified even with the screen locked
Vibration and a notification when rest is over. On iPhone, the timer shows on the lock screen and in the Dynamic Island.
In detail →Warm-up, failure, drop sets
One tap on a set's pill changes its type. Warm-up sets are tracked separately and don't inflate your volume.
In detail →Count-up timer for holds and cardio
On isometric and cardio exercises, start a full-screen stopwatch: the duration fills itself into the set.
In detail →Columns that fit each exercise
Load and reps, reps only for bodyweight, +kg when weighted, −kg when assisted, distance and time for cardio, seconds for isometric holds.
In detail →Live records
The moment a set beats your record, it earns a gold trophy. One tap shows the old record, the new one and the difference.
In detail →A workout that adapts
Swap an exercise when the machine is taken, reorder, add or remove sets and exercises on the fly.
In detail →Notes per exercise and per workout
Keep a technique cue or a machine setting on an exercise: it comes back every workout.
In detail →Progress and resume
A bar at the top of the screen shows how far along you are. Minimise the workout to browse the app; it even survives the app being closed.
In detail →Workouts & programs
Workouts, ready to start
Workout templates
Plan your workouts once: exercises, sets, target reps and loads, rest times. Three templates on the free plan, unlimited with Premium.
In detail →Folders
Group templates by program or training block with drag and drop, and reorder folders as you like.
In detail →Freestyle workouts
Feeling spontaneous? Start without a template and add exercises as you go. A good freestyle workout becomes a template in two taps.
In detail →Ready-made programs
Beginner Full Body, Upper / Lower, Push Pull Legs… Import a full program in one tap, then make it yours. Some programs are Premium only.
In detail →Weekly goal
Set your target frequency: the home screen counts this week's workouts and your streak of successful weeks.
Editable history
All your workouts, viewable and fixable after the fact: name, date, duration, note and every set.
Exercises
A complete library, plus your own
1,000+ exercises
A library with instructions, sorted by muscle group and equipment: barbell, dumbbells, machine, cable, kettlebell, resistance band, bodyweight.
In detail →Your own exercises
Create an exercise in seconds: name, muscle group, category and secondary muscles, all counted in your statistics.
In detail →A page per exercise
Your records, totals and full history on that exercise, including where it sat in each workout.
In detail →Records & progress
Know whether you are improving, beyond how today felt
Records on every exercise
Max weight, estimated 1RM, volume and max reps; distance and time for cardio. All detected automatically.
In detail →Estimated 1RM
Your theoretical one-rep max, recalculated after every workout with the Epley formula, without ever attempting a true max.
In detail →Progress charts Premium
1RM, max weight, volume, reps, distance, speed: how each exercise evolves over 30 days, 3 months, 1 year or all time.
In detail →Share card
Turn your workout into an image: summary, exercise list, photo or record beaten, ready to send.
In detail →Statistics
Your training from every angle
Monthly summary Premium
Workouts, volume, records and time spent, automatically compared with the previous month.
In detail →Muscle distribution Premium
Your sets per muscle group, by week, month, quarter or year, with low, optimal and high zones.
In detail →Program distribution Premium
Before you even train: planned sets per muscle in a folder, missing muscles and those only trained as secondary.
In detail →Top progressions Premium
Your ten biggest improvements over the period you pick, in 1RM, load or volume.
In detail →Strength index Premium
Your overall strength as a single number, set to 100 at your starting point, with its change over 3 months, 6 months and 1 year.
In detail →Session analysis Premium
One workout compared with the previous ones from the same template: volume, duration, best set, records.
In detail →Activity calendar Premium
53 weeks of training at a glance, your current week streak and your best one.
In detail →Badges Premium
Milestones to unlock: workouts, volume lifted, consistency, records and exercise variety.
In detail →AI analysis
Your history, read by the AI of your choice
Progress analysis Premium
Musku prepares a structured summary of your training, over a month, a quarter, a year or your whole history. Paste it into ChatGPT, Claude or Gemini.
In detail →Program analysis Premium
Have your plan reviewed before you follow it: balance, volume, weak points. From your profile or straight from a folder.
In detail →Your data stays with you
The summary is built on your phone. Nothing is sent to an AI until you share it yourself.
In detail →Apple Watch
Your workout on your wrist
A true native app
Sets, loads, reps, set types and rest timer: log everything with the Digital Crown, phone in your pocket.
In detail →Leave the iPhone in the locker
Start a free workout or one of your templates from the Watch. At the end, the workout reaches your iPhone as soon as it's in range.
In detail →Live heart rate
Measured by the Watch sensors throughout the workout.
In detail →Everyday
And everything else
Works offline
No signal at the gym? Start, log and finish your workout anyway: it syncs on its own, with no duplicates.
In detail →Apple Health and Health Connect
Your workouts are saved to Health; weight and body fat sync both ways.
In detail →Body measurements
Weight, body fat and ten circumferences: shoulders, chest, arms, waist, hips, thighs, calves. Progress chart with Premium.
In detail →iPhone widget
Your workouts on the home screen: one tap and the app opens straight on the right one.
In detail →iPhone and Android
One account, synced across your devices. Your Premium follows you from one platform to the other.
Light and dark theme
Musku follows your phone's theme, or the one you pick.
In English and French
The app, the Apple Watch app and the programs exist in both languages.
No ads
No banners, no interruptions, on the free plan and on Premium alike. Musku is built in France by an independent developer.
Ready to log your next workout?
Musku is free on iPhone and Android, with a native Apple Watch app.
Download Musku