You do not need full-time internet for OnBeat to function

If your internet connection goes down or you don’t have access to the internet, the OnBeat app will still function normally.

However, the internet is required to deliver the workout summary emails at the end of the session. When you stop the group timer, the workout goes into a queue and will be delivered the next time you are connected to the internet.

Go to the main menu and choose Pending Workout Session Uploads. If you are connected to the internet, the list should be empty if no workouts are waiting there.