Plan your split
Build recurring days — Push, Pull, Legs, Core, Upper, Lower, Cardio, Flexibility, or Rest — each with its own exercises, target reps, and suggested sets.
iPhone & Apple Watch
Lift more.
Fumble with your phone less.
Dumbbell is a simple, focused workout tracker. Plan your split, log every set, and keep a rest timer running in sync across your iPhone and Apple Watch — with a Live Activity so you never have to unlock your phone between sets.
Download on the
App Store
Free · Universal · iOS & watchOS
iPhone — plan & log
Apple Watch — log & rest from your wrist
Live Activity — rest timer on your Lock Screen
iCloud — synced everywhere
Everything you need. Nothing you don't.
Dumbbell doesn't try to be everything. It's a fast, distraction-free way to plan your training, log your sets, and keep moving between them.
Built-in exercise library
A catalog of common gym movements organized by muscle group, with sensible defaults and automatic muscle-group inference for custom exercises.
Log sets in seconds
Track reps and weight per set with a smart weight stepper — small taps for fine adjustments, bigger jumps the longer you hold.
Rest timer that follows you
Start, pause, or adjust your rest timer from your iPhone or Apple Watch and it stays perfectly in sync. A Live Activity keeps the countdown on your Lock Screen and Dynamic Island.
See your progress
Every workout is saved to your history. Each day compares your total reps against last time, so you know at a glance if you improved, maintained, or fell behind.
Synced with iCloud
Your workouts, history, and templates sync across every device automatically, with a graceful fallback to local-only storage if iCloud isn't available.
A closer look
From planning your split to watching your top set climb.
Your workout, on your wrist.
The Apple Watch companion app shows today's day, lets you log sets, and controls the rest timer — all without reaching for your phone. Start it there, finish it there.
Frequently asked questions
Is Dumbbell free?
Yes. Dumbbell is free to download and use, with no account or sign-up required to get started.
Do I need an Apple Watch to use it?
No. Dumbbell works great as a standalone iPhone app. If you do have an Apple Watch, the companion app lets you log sets and control the rest timer straight from your wrist, kept in sync automatically.
Does my data sync across devices?
Yes. Workout templates and history sync via iCloud, so your data follows you between your iPhone, iPad, and Apple Watch. If iCloud isn't available, Dumbbell automatically falls back to local-only storage on your device.
How does the rest timer stay in sync?
The timer is driven by an absolute end time rather than a simple countdown, and broadcasts state changes between your iPhone and Apple Watch. A Live Activity mirrors the countdown on your Lock Screen and in the Dynamic Island so you can see it without opening the app.
Is Dumbbell open source?
Yes — the source is available on GitHub. Issues and pull requests are welcome.