The developer cares about your privacy.
RevenueCat processes the in-app purchases. The app instructs RevenueCat to use anonymous identifiers that cannot be tied back to you.
The app does not store personal information such as name, email, etc.
The app does not know your location or ask for permission to know your location.
The app has the option to log your workouts via Apple HealthKit. If you have logging enabled in the app and you have given the app HealthKit permission then when a workout is complete the app logs that workout’s data via HealthKit. The app itself does not retain any of that workout data once a workout is complete.