Unlock the full potential of your workouts.
Reach your fitness goals faster and smarter with our cutting-edge app, designed to help you achieve the optimal 120-180 minutes of cumulative time in heart rate Zone 2 each week.
Five heart rate zones tracker
Zone2 Fitness monitors your progress in all five heart rate zones, giving you a comprehensive view of your training and ensuring you're always on track to hit your goals!
Custom workouts on Apple Watch
Create custom workouts that put you in control of your target heart rate Zone, plus time or distance, and use them on your Apple Watch.
Maximize workout efficiency
Don't guess about how much time you spend in Zone 2 and Zone 5: maximize workout efficiency with zone percentage charts.
Custom heart rate Zone goals
Set custom heart rate Zone goals to put yourself in control of your fitness journey.
Frequently asked questions
If you have anything else you want to ask, reach out to us.
How much does Zone2 Fitness cost?
The app is free. You may optionally pay a small monthly or annual subscription fee to unlock some extra features.
Who built the app?
Zone2 Fitness was built by Aaron Brethorst, a long-time indie developer based in Seattle, WA. Aaron has been building macOS apps since 2003 and iOS apps since 2008.
Which versions of iOS does Zone2 Fitness support?
The Zone2 Fitness app requires iOS 17.0 or higher.
Does Zone2 Fitness work on iPad or Mac?
No, Zone2 Fitness only runs on an iPhone.
Does Zone2 Fitness require an Apple Watch?
No, Zone2 Fitness works with any connected fitness device that adds its data to HealthKit.