[spogbiper]

> At some point a human reviewer will need to detect the app is allowing the user to pay with PayPal and therefore block it from distribution.

But on Android I can just release the .apk or publish to Fdroid app store, etc. I don't think Google would be reviewing the app at all.

[mmahemoff]

You can and correct Google won’t review it - that’s why Android shows a warning when you enable sideloading about only using APKs from trusted sources (to my recollection).

Those alternative channels typically provide a tiny percentage of active installs compared to Google Play installs, however.