Zone 2 Base

An AI coach that plans your week and keeps you in Zone 2, on iPhone and Apple Watch.

Get it on the App Store

Free to start. iPhone (iOS 17+) and Apple Watch (watchOS 10+). No account.

• WebsiteWhat it does, pricing, FAQ
• Zone 2 heart rate calculatorFree: your Zone 2 range in seconds
• Zone 2 apps comparedApple Workout, Garmin, Runna, WHOOP, Polar
• Use your GarminBroadcast heart rate to your iPhone
• SupportHelp and answers
• Email ussupport@zone2base.app
• PrivacyHealth data stays on your iPhone
• TermsTerms of use

© 2026 Zone 2 Base. Not a medical device.