Support for the legacy Fitbit Web API ends on September 30, 2026
Important: Support for the legacy Fitbit Web API ends on September 30, 2026. After this date the API will continue to operate, but Google will no longer fix bugs or provide API support. On October 30, 2026, the Fitbit Web API will be turned off and will no longer function or sync data to or from Fitbit users. To continue accessing data for your users after this date, migrate to the Google Health API.
Announcing a new API to share Irregular Rhythm data
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Announcing a new API to share Irregular Rhythm data

Google's Irregular Rhythm Notifications (IRN) feature, launched in 2022 , allows users to passively monitor their heart rhythm in the background using PPG pulse rate. This feature can detect irregular heart rhythms, a potential indicator of atrial fibrillation (Afib).

Google is now expanding this capability by enabling users to share this data with healthcare providers, potentially improving the diagnosis and management of Afib. Google's mission is to empower individuals with accessible tools to better understand and manage their health. By facilitating the exchange of critical health data between users and healthcare providers, Google aims to improve the detection, diagnosis, and treatment of conditions like Afib.

Developers can use the following API endpoints when integrating the irregular rhythm notification data type: