What devices does Cardiogram work with?

Supported phones:

Apple iPhones
Android phone with the Google Play Store

Supported wearables:

All Apple Watch models.* The Cardiogram companion app for the Apple Watch requires WatchOS 6 and above.
All Wear OS by Google devices and Samsung Galaxy Watch 4 or newer - the Cardiogram companion app, is required on the watch for Cardiogram to work properly.
All Garmin wearables with a heart rate sensor - Fenix 5 Series, Forerunner, Vivoactive 3, etc.
All Fitbit wearables with a heart rate sensor including the Google Pixel Watch

ECG Importing:

Only available with iOS 17 and Apple Watch 4 and newer.

Workout Importing:

Apple Watch
WearOS Watches
Fitbit

Devices not currently supported:

HR bands or straps:

At the moment, we do not directly support any HR straps such as the Polar H10 or Garmin. However, you might be able to connect your HR band to your watch and use it as an extra sensor. After that, you can import the data into your Cardiogram profile. It's important to note that this method is not supported or tested by Cardiogram and may lead to performance and stability issues. For more details, please contact your HR band manufacturer.

Watches:

Samsung watches from before 2020, Amazfit, Mi Band, Withings, or other smartwatches that do not run on WearOS.