What should I enter as the callback URL when registering a mobile app?

[OConnor]

I want to develop a mobile app that analyzes heart rate data. What should I enter as the callback URL when registering the app? I am new to developing mobile app. I don't know if we have a callback URL of a mobile app.

[JeremiahFitbit]

You must have a redirect URI, as otherwise the user won't be returned to your app.

You either need to use a Web service to manage your OAuth access and refresh tokens or you need to use the Implicit Grant Flow with an app URL scheme (e.g. awesomeapp://auth/fitbit/done ).