When you log in to the app for the first time you can tap on link fitness device under the Body section. If you choose to skip that step or want to link a different wearable follow the steps below.
1. Tap More on the bottom right.
2. Tap on the Setting Cog at the top right.
3. Under Linked Fitness Device you can select which device you are able to run.
You can view our full list of compatible fitness trackers here.