Joined a challenge but you don't use Strava, you use Runkeeper or vice versa? No problem!
- Scroll to the app you want to use, click the drop down and tick the box to enable it (make sure to update what is being tracked).
- Scroll to the app you want to turn off, click the drop down and untick the box to disable it.
- Head to the bottom and hit 'Back to your page' and you are all done!