Known Issues

We strive to create high quality software with zero defects, but sometimes bugs do slip through, or problems with particular heart rate sensors are identified. Known issues will be listed on this page.

Heart Graph v5.6

  • A bug in WatchOS 4 means that the Watch app can fail to start a workout directly when requested by the phone. There is a simple workaround – after selecting to start a new workout on the phone, simply make sure that Heart Graph is actually running on the Watch, for example by raising your wrist to activate the screen.
  • If you’re using Bluetooth headphones while recording heart rate, you may want to ensure that Rep counting is turned off in the app settings. With Rep counting enabled, the connection to Bluetooth headphones is lost when Heart Graph plays sounds due to a limitation in iOS.

If you you think you’ve found a bug that’s not listed above, please contact us on our Support page – we cannot fix problems that we don’t know about!