Zone Trainer: Heart Rate Zones

This app connects to your heart rate chest (or arm) strap and displays your heart rate and age based zone in real time while you work out. I have it in front of my Assault Bike and do HR based interval training. It connects to my HR straps (Garmin and Polar) flawlessly. Just get the app and start working out!

It's annoying to look at the watch every time while on the treadmill and this app solves the problem. This is exactly what I was looking for but hope to see Apple Watch support, ie get the heart rate from the current workout. Also if there was a lock screen widget this would be perfect! Big thanks for it being free and not collecting any data or requiring an account!!!

Exactly what you need and nothing you don’t want. Easiest connection to Polar HR monitor. Easy to see when running or biking. Audio call outs for HR zones that don’t mute the music - amazing! Easy manual sets for zones. Works at same time as Strava. Just took it for a first run and kept looking at the screen until I realized how good the audio announcements were - helps keep the distraction down and lets me focus on form.