Trenbro

Workout tracker for iPhone

Log your workouts.
Track your progress.
Own your data.

Trenbro is a fast, no-nonsense gym tracker built natively for iOS. It works completely offline, syncs through your own iCloud, and stays out of your way between sets.

Download on the App Store See what it does
Trenbro app icon

Everything you need to train seriously

No feed, no social clutter, no account required. Just the tools that make logging and progressing easier.

  • Fully offline

    Log every set, rep, and weight without a connection. The gym basement won't slow you down.

  • iCloud sync

    Your history syncs across your devices through your own iCloud via CloudKit. We never see your data.

  • Progress charts

    Every exercise gets clear progress charts, so strength gains and plateaus are obvious at a glance.

  • Custom exercises

    Built-in library not enough? Create unlimited custom exercises that match exactly how you train.

  • Live Activity

    Your current workout stays visible on the lock screen and Dynamic Island while you train.

  • Widgets

    Home screen and lock screen widgets put your training streak and next session one glance away.

Ready to start logging?

Free to download. Built natively with SwiftUI for iPhone.

Get Trenbro on the App Store

Frequently asked questions

Does Trenbro work offline?
Yes. Trenbro is fully offline-first. You can log every set, rep, and exercise without an internet connection, whether you're in a gym basement or on a flight.
How does iCloud sync work?
Trenbro uses Apple's CloudKit to sync your workout history across your iPhone through your own iCloud account. Your data is never stored on Trenbro's servers.
Is my workout data private?
Yes. There is no account to create, no analytics, and no tracking. Your training log lives on your device and in your personal iCloud — read the full privacy policy.
Can I create my own exercises?
Yes. Beyond the built-in exercise library, you can add unlimited custom exercises so the app matches exactly how you train.
Does Trenbro support widgets and Live Activity?
Yes. Trenbro ships home screen and lock screen widgets, plus Live Activity that shows your current workout at a glance while you train.