How do I pair Google Fit as my Activity Tracker to the Challenge App?

Select Google Fit app during the pairing to use your smartphone's integrated step counter as your tracking device, and give permission to the Challenge app to receive step data from Google Fit.

Note: You now need to install and register in the Google Fit app to track your step data. Download the latest version of the app from the Google Play Store here.

Image #1: Select Tracker