Milevids is an excellent Android porn app, and it's totally free, passed our APK scanner tests and available to download directly from the company right now.
If you've been looking for a free porn app with a name you recognize, you can do a lot worse than trying the YouPorn Android app. Direct APK links included.
Aptoide is a third-party store with millions of downloads & 500,000+ apps to download. Unlike Google Play, lots of them are adult comics, porn apps and games.