STEPN Sidekick itself does not collect any data whatsoever. 

Apple and Google collect basic demographic information for gathering statistics and generating usage reports, eg device type, general location, etc. 

STEPN Sidekick uses third-party advertisers including AppLovin, Google AdMob, and Meta. These companies collect user data for targeting ads. Their privacy policies can be found here:

AppLovin: https://www.applovin.com/privacy/

Google: https://policies.google.com/privacy

Meta: https://www.facebook.com/privacy/policy