Connect any Bluetooth chest strap to your phone and train in real-time heart rate zones. Polar, Garmin, Wahoo — no smartwatch required.
Instantly connects to Polar H10, Garmin HRM, Wahoo TICKR, COOSPO, Magene and any standard BLE heart rate strap.
Five real-time heart rate zones from fat-burning Zone 2 to VO2 Max. See exactly where your effort is — and stay there.
Works with just your phone and a chest strap. No smartwatch, no sign-up, no subscription. Open the app and go.
Put on your Bluetooth heart rate chest strap — any brand works.
Open Strap Zone. Your strap is detected automatically in seconds.
See your live heart rate zone, time in zone, and workout stats — all in real time.
Zone 2 is a low-intensity heart rate zone (60-70% of your max) that builds aerobic endurance and maximizes fat burning. It's the training method recommended by Dr. Peter Attia, Andrew Huberman, and top endurance coaches.
No. Strap Zone works with just your phone and any Bluetooth chest strap. No Apple Watch, no Garmin watch, no wearable needed.
Any standard Bluetooth Low Energy (BLE) heart rate chest strap: Polar H10, H9, Garmin HRM-Pro, HRM-Dual, Wahoo TICKR, COOSPO H6/H808S, Magene H303, and more.
Yes. Strap Zone is free to download on both iPhone and Android with no subscriptions or hidden fees.