Great app for monitoring workout heart rate in real-time – Heart Graph Review

App is awesome for monitoring workout heart rate in real-time. You can easily see your time in each heart rate zone. The heart rate zones are easily customizable. You can also create alarms to help you monitor which zone you're in. The developer is also great and is willing to work with customers to improve the app and address feedback. Five stars.
Review by Sloooz on Heart Graph.