All posts by The Smoky Cat

Garmin HRM sensors

The the following Garmin HRM sensors only use ANT+ for communication:

Since the iPhone does not have the hardware necessary to connect to ANT+ devices, the only way to receive a signal from these sensors is to use additional hardware. Heart Graph can connect to the Wahoo Fitness Key for ANT+ sensors, although this is for the old 30-pin iPhone connector.

Note that the Garmin HRM-Dual, which supports both ANT+ and Bluetooth transmission simultaneously does connect to Heart Graph directly.

Heart Graph sensor mode

Heart Graph has two different modes, depending on the type of heart rate sensor you are using to measure your heart rate. The default mode selection is set when you first launch Heart Graph, but can always be changed at any point in the app settings.

If you’re using an Apple Watch, you should set Heart Graph to be in “Apple Watch” mode:

if you’re using a Bluetooth or ANT+ sensor, you should choose the “BTLE/ANT+” mode:

It’s important to select the correct mode to allow Heart Graph to connect to your chosen sensor – the app will not try to connect to the Apple Watch if you have selected “BTLE/ANT+” mode, and similarly, the app will not try to connect to Bluetooth heart rate sensors if you have chosen “Apple Watch” mode..

Heart Graph v5.1 released

Today we released Heart Graph v5.1 with improved support for resting heart rate:

  • You can now automatically read resting heart rate samples from Health, which will be displayed in a graph on the “Compare Statistics” screen
  • When recording a resting session, the minimum heart rate will be written to Health for sharing with other apps
  • You can now add text annotations during resting sessions
  • We’ve added a minimum heart rate alarm that can be configured to sound if your heart rate drops below a specified value

We hope you like our new app icon!

Heart Graph v5.0 released

Today we released Heart Graph v5.0 – with WatchOS 4 we are finally able to bring Apple Watch users the full functionality of Heart Graph on the iPhone:

  • If you start your workout using the phone, you will see the graph in real time on the phone, and have access to zone and heart rate alarms, planned workouts, rep counting and reference sets.
  • If you’d rather use the Heart Graph on your Watch as you do now, you can still keep using it just the same as before.
  • Haptics are played on the Watch for the heart rate alarm and heart rate zone alarms.
  • WatchOS 4 is now required to run Heart Graph on your Apple Watch.

We’ve also made the following improvements to the app on the phone:

  • Support for iPhoneX.
  • Remove display of blue Premium Banners once Premium Features are purchased.
  • Simplify the display of the list of existing workouts and include the duration of each workout.
  • Improve selection of workout type so that it is chosen once when starting a new workout; the three most recent types of workout you’ve performed are remembered for ease of access.
  • Add “Other exercise” as a workout type option.
  • Add workout type and location details to planned workouts.

Heart Graph v4.4.1 released

Today we released Heart Graph v4.4.1, including:

  • Add live heart rate zone histogram to the phone during recording
  • Add ability to define annotation markers during workouts
  • Add option for coloured zone bands instead of coloured set types
  • Add option to display rolling mean during workout in place of total workout mean
  • Add option to vibrate on alarms as well as play a sound
  • Fix bug where app crashed if trying to save an image to the Camera Roll