alt Hacker Newshttps://developer.apple.com/app-store/review/guidelines
4.10:
You may not monetize built-in capabilities provided by the hardware or operating system, such as Push Notifications, the camera, or the gyroscope; or Apple services and technologies, such as Apple Music access, iCloud storage, or Screen Time APIs.
Nordictrack does this with iFit as well. Can’t sync to Apple Health without a paid account. Syncing is somewhat janky too.