So if you install directly to an Android device, not using the Google Play store, it’s technically not relying on a server, only the Android device?
Discussion
Yep.
Ok, makes sense, mobile devices are easier to ‘decentralize’, but web apps and nodes, not so many (unless web app has PWA option).
Agree. Though some WebApps are html + JavaScript only. They technically run on the browser. That's better than having a backend to prepare info for the front end.