Heart Rate Zones Trainer

Stop guessing how hard to train. This app turns your age and resting pulse into five precise heart-rate zones, so every run, ride or row lands exactly where your goal needs it.

WHY THIS APP

• Five personal zones from proven formulas — Fox, Tanaka and Karvonen

• Pick a goal — burn fat, build endurance or raise your threshold — and see the exact beats per minute to hold

• Guided live sessions track your time in each zone in real time

• Full history with time-in-zone charts and your resting heart-rate trend

• Reads heart rate from Apple Watch, or enter it by hand

• Clean, native design with light and dark mode

HOW IT WORKS

1. Add your age and resting heart rate to build your zones

2. Choose a target zone and start a session

3. Finish and save to watch your fitness build over time

FULL ACCESS

Guided sessions, goal targets and your saved history unlock with a weekly, yearly or lifetime plan.

Every workout stays private on your device — no accounts, no ads, no tracking.

— LEGAL —

Terms of Use: https://web-levi.web.app/terms

Privacy Policy: https://web-levi.web.app/privacy-policy

Support: [email protected]