Log your sets and reps the way you would in any gym tracker. KasMaker maps every one onto an interactive body map, spots your PRs, and tells you what to train next.
Free · iPhone & Apple Watch
A bench press lights your chest, front delts and triceps, brighter the harder you went. By the end of the week your training is on your body, and so is what you skipped.
The KasMaker body map, front and back, lighting up the muscles a week of training worked
01Primary muscles light up bright, secondary muscles dimmer
02A weekly set target for every muscle, and Train Next for what's furthest short
03Tap any muscle for how its week stands, its stats, and exercise picks
04Share your week's map as an image
Reps and weight come pre-filled from last time. Tap to complete a set and the rest timer starts on its own, on your phone, your Lock Screen or your wrist.
Every set filled in with what to lift next — and the reason, right on the card.
Fresh, recovering, or fatigued — for every muscle. Know what's ready to train today.
Top weight and estimated one-rep max for every exercise, so you can see whether a lift is really moving.
Push/pull balance, volume, progression and recovery, read from your own log.
Start a workout on your iPhone and it opens on your wrist: the next set, a rest countdown that taps you when it's time, and your heart rate. Complete sets with a tap, and the workout counts toward your Activity rings.
Your muscle map, right on your home screen. See what's fresh and what's recovering without opening the app.
Timer, current exercise, and set progress on your lock screen. Log sets without unlocking your phone.
Your training stays on your iPhone and in your own iCloud. Signing in is optional, nothing is sold, nothing is watched.
Everything you need to train and track. No limits, no ads.
That's $1.67 a month — 44% off the monthly price.
Set targets and analytics, for lifters who want the numbers.
No account required. No ads. No third-party tracking — on either plan.
Every muscle gets a readiness state — fresh, recovering, or fatigued — based on your sets and that muscle's recovery window, so you know what's ready to train today. Rated sets sharpen the estimate. Recovery readiness is a KasMaker Pro feature.
With KasMaker Pro, each working set comes filled in from your last session of that exercise. At 5 reps or fewer, the weight goes up once every set makes its reps. Above that, you add a rep a set until the top of your range, then the weight goes up. Sets rated easy add weight sooner, a muscle that's still recovering repeats last time's numbers, and after three weeks away you restart 10% lighter. The reason shows on the card, and you can turn targets off in Settings.
Yes. Show today, or the last 3, 7, 14 or 30 days. The map and the volume list follow your choice, and over a week or more each muscle's bar shows its weekly target.
KasMaker is free to download and includes unlimited workout logging, unlimited routines, the muscle body map with weekly targets and Train Next, PR detection, the rest timer, supersets, a plate calculator, a warm-up calculator with set types, RPE/RIR effort tracking, Apple Health sync, iCloud sync, the Apple Watch app, and 700+ exercises. KasMaker Pro is an optional upgrade that unlocks set targets, per-muscle recovery readiness, progress charts, all training insights, and CSV export — $2.99 monthly, $19.99 yearly, or $49.99 once for lifetime. There are no ads and no third-party tracking.
Yes. KasMaker uses iCloud to sync your workout data across all your Apple devices automatically and follow you to a new phone — no account to create. It also works offline if you'd rather stay local. Finished workouts can optionally be saved to Apple Health so your lifting counts toward your activity.
Yes. Start a workout on your iPhone and KasMaker opens on your Apple Watch with the next set, a rest countdown that taps your wrist when it's time, your heart rate, and a Complete Set button. Your watch saves the workout to Apple Health with heart rate and calories, so it counts toward your Activity rings. The workout itself stays on your iPhone, and the watch app is free.
No. Your data stays on your device and syncs securely via iCloud. Nothing is collected or shared with third parties, and there is no tracking or analytics.
Yes. You can export all your workout history as a CSV file from the Settings screen. CSV export is a KasMaker Pro feature.
Yes. KasMaker ships in dark by default — built for the gym floor — and you can switch to light or follow your system appearance from Settings. Six accent colors are available too.
KasMaker requires iOS 18 or later. The Apple Watch app needs watchOS 11 or later.
Kas means "muscle" in Turkish. KasMaker = muscle maker.
No account required. Your data stays yours.