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Track every lift. Beat every PR.

Log a set in two taps. Never lose a session. Feel every PR, on your wrist.

Free · No ads · TestFlight open now.

Works on iPhone 8 and newer · Apple Watch Series 4 and newer
Musklr active workout session showing exercise list with set rows
Built for the gym, not your desk
What's inside

Built for the set you're about to do.

Three things matter in the gym: log it fast, track what you lifted, and feel the PR when it lands. Musklr does those - and stays out of the way.

Musklr exercise list with set, previous and target columns
01 · Log fast

Two taps. Set logged.

Numbers stay where you left them. Tap kg on the left, reps on the right. Same column order across iPhone and Apple Watch. No menus, no friction.

  • Identical layout: kg always on the left, reps on the right. Every device.
  • Auto-fill from last set: Last week's numbers prefilled; just confirm or adjust.
  • Rest timer that follows: Starts on the watch, finishes on the phone. Never both buzzing.
  • Offline first: Lose signal in the basement gym? Sets queue and sync later.

Every session counts.

Free forever · No ads · TestFlight open now

Download for iPhone
Musklr workout complete screen with trophy and muscles worked diagram
02 · Feel it land

Sets that feel like wins.

When you finish, you see exactly what you did: duration, volume, muscles worked. The watch double-buzzes on your last rep so you feel it before you read it.

  • Watch + phone together: Both devices celebrate the same set, in the same second.
  • Wrist haptics: Distinct double-buzz you'll learn to feel for.
  • Workout summary: Duration, volume, sets, exercises. At a glance, not buried.
  • Silent mode respected: No notifications, no sounds. Just the visual moment.
Musklr exercise grid with anatomy thumbnails for each lift
03 · Find any lift

2,000+ exercises. One tap away.

Every lift, every variation, with an anatomy diagram showing the muscles worked. Filter by equipment in the rack and the muscle you want to hit, and you'll have honest options in seconds.

  • 2,000+ videos: From barbell deadlift to cable tricep pushdown. Staples and nuanced variations.
  • Mapped to equipment: Barbell, dumbbell, cable, bodyweight, machine. Filter to what's free.
  • Mapped to muscles: Primary and secondary movers tagged on every exercise.
  • Instant search, even offline: Type "rdl", "split squat" or "rear delt". Fuzzy matching that gets it, no signal needed.

Find the exercise. Lift. Log it.

Free forever · No ads · TestFlight open now

Download for iPhone
Musklr workout complete screen with trophy and muscles worked diagram
04 · PR moment

PRs that feel like PRs.

When you lift heavier than you ever have, the watch double-buzzes and the phone celebrates. Confetti, only when earned. Never as filler.

  • Watch + phone together: Both devices celebrate the same set, in the same second.
  • Wrist haptics: Distinct double-buzz you'll learn to feel for.
  • Shareable PR cards: Auto-generated, on-brand, ready to post. Or keep private.
  • Silent mode respected: No notifications, no sounds. Just the visual moment.
Musklr live muscle heatmap showing front and back body diagrams
05 · Live heatmap

See exactly what you've trained.

As you log sets, the body diagram lights up the muscles you've hit. Front and back, in real time. Catch the imbalance before it becomes an injury.

  • Live as you lift: Each set updates the heatmap on phone and watch within a second.
  • Front and back views: Both sides of the body, side by side, no swiping required.
  • Per-muscle coverage: Volume × intensity × recency, normalised against your weekly target.
  • Weekly imbalance flag: Pulls you toward the muscle group you keep skipping. Politely.
Musklr SATS program with workouts list and muscle thumbnails
06 · Pick a program

Programs that earn their place.

Bring your own routine or follow a curated one. Every program lives next to your history, with workouts that show you the muscles before you start.

  • Bring your own: Build a custom routine in 60 seconds with the program editor.
  • Workout previews: Front + back muscle maps on every workout, before you tap Start.
  • Multiple views: Grid, list, or compact. Pick the layout that fits your gym style.
  • Coach mode: Send programs to clients and watch their sets in real time.
Musklr Explore feed showing recently created workouts and friend profiles
07 · Train together

Lift with your people. Or not.

Built like a feed, not a leaderboard. Follow friends, like their PRs, drop a comment after a brutal set, and post your own sessions when you want to. Or skip the social entirely. No login, fully offline.

  • Your profile, your call: Bio, recent PRs, and finished workouts. Or stay fully anonymous.
  • Follow & friends: One-way or mutual. See sessions only from people you care about.
  • Like & comment: Quick reactions on PRs. Real talk in the comments.
  • Post on your terms, or never: Share a workout with notes and a photo, or stay private. Sign-in is optional; the app works fully offline either way.

Log your next set in two taps.

Free forever · No ads · iOS 16.1+ · watchOS 9.6+

Download for iPhone