HR Zones

Heart Rate Zones – Calculate Your Training Zones

HR Zones helps you calculate personalized heart rate training zones and put them to work. Guided first-run setup captures your profile, then the app shows five science-based zones with Age, Max HR, and BPM ranges at a glance.

Train smarter with goal-based recommendations, a time-in-zone planner, and a multi-segment zone timer. Share your zones as text or an image. Support multiple profiles for family or clients—all data stays on device.

Key Features:
• First-run onboarding with privacy & health disclaimer
• Multiple max-HR formulas (Standard, Tanaka, Gulati, Custom)
• Gender recommendations and optional Karvonen formula
• Multi-profile support with calculation history
• Train tab: goals, time-in-zone planner, zone timer
• Optional Apple Health: resting HR + workout zone analysis (on device)
• Private Coach: on-device Apple Intelligence tips when available, offline tips otherwise
• Home Screen & Lock Screen widgets for your zones
• Siri/Shortcuts: ask for a zone’s BPM range
• Live Activity countdown while a zone timer runs
• Goal highlights on zone cards
• Share zones as text or image
• Modern materials UI, haptics, light & dark mode
• No account required—preferences stay on your device

Included vs. Pro:
The five-zone calculator, every formula, Karvonen, one profile, widgets, Help, and share-as-text are included with the app. HR Zones Pro (optional one-time in-app purchase, no subscription) adds extra profiles, history export, the Train tools (goals, planner, zone timer), Health workout analysis, and the Private Coach.

How It Works:
1. Complete onboarding and set your date of birth
2. Review Max HR and five training zones
3. Pick a goal on the Train tab
4. Plan session time by zone or start the timer
5. Share your zones or switch profiles as needed

Perfect For:
• Runners and cyclists
• Fitness enthusiasts and coaches
• Multi-athlete households
• Anyone learning zone training

Heart Rate Zones puts transparent, science-based zone training in your pocket with a privacy-first design.

This app is informational only and is not a medical device. Consult a clinician before starting or changing an exercise program.