Apps. I prefer foss apps. I donate, report, contribute and spread the word.
Even if I would pirate an app it wouldn't become open source. I couldn't contribute. I couldn't report bugs, suggest ideas, fork and apply my own stuff.
We've had a no piracy rule over in the Android subs/communities for years and the funny thing is, by time we ever got to someone trying to post a pirated APK the community themselves tore them a new arsehole.
Easiest rule to enforce when the community will absolutely hiss at you. Love em.
edit: a fun talking point I suppose is YouTube, and its app. We got a lot of people arguing that Newpipe 'was piracy' and I even had many debates with other members/mods about is it, or isn't it piracy?
My view it's a website that you can parse even with other tools like yt-dl, and if Youtube.com wanted to stop use of Newpipe / Revanced whatever they could in the blink of an eye.