If you opted out of Apple Health during set up on fit52 or if your data is not showing up on Apple Health and/or in other health apps, you may have to turn on fit52 in the settings on your iPhone.
Follow these steps to integrate fit52 with Apple Health:
Open Settings on your phone
Scroll down and press Apple Health
Press Data Access & Devices
Press fit52
Press Turn All Categories On
Your information should start showing up on your next workout.
