Does it have access to the same filesystem as Android? I’ve been looking for Android apps that can do something like dropbox’s “online only” feature. Most cloud storage providers offer that on desktop but I’ve never found one that works on Android. It’s just photo syncing or nothing usually, and even that doesn’t work like I want.

Also, can it run uninterrupted in the background or is android going to unceremoniously kill it randomly like it does with normal apps?

I used that briefly 10+ years ago when I got a Fire Stick for like $5. I even installed it on one of my phones back then, since they had a lot of app giveaways and I was dumb.

It was basically “Google Play but worse”. Like the Epic Games Store is to Steam.