To use the heart rate feature within Sleep Time, you will first need to install our Instant Heart Rate application (link below). Once installed, you will be given a 40-minute window upon waking up each morning to access the most recent data point in Sleep Lab. Tap on the Heart Rate line in the details section, and Instant Heart Rate should automatically open to take your reading.
Enter the same login information within both the Instant Heart Rate and Sleep Time applications to automatically sync all of your data.
Android:Unfortunately the Instant Heart Rate feature has not yet been integrated into the Android version of Sleep Time. We are working hard to install this feature in a future update, so check back soon!