any apps still compatible with ios 6?

[OrangeTurtle]

i have an iphone 3gs on ios 6, but none of the apps are compatible anymore with ios 6, and i can't upgrade. are there any apps that are still compatible with ios 6?

also, is there any way to get an upgraded version of ios on it (e.g. ios 8 or ios 9) or a version of android?

[Zando_]

Not really. Most of them require 9 or newer, though some can download an older version compatible with 6 that still kind of works (Spotify for example, it'll run an ancient version on my iPhone 4S with 6.1.3, but it's a bit jank). 

29 minutes ago, OrangeTurtle said:

is there any way to get an upgraded version of ios on it (e.g. ios 8 or ios 9) or a version of android?

Nope. There's probably some absolutely cracked individual out there who managed to hack android onto an iPhone, but it'd be about as easy to do and practical as running Windows on a Switch (actually probably harder). There's no way to run the newer iOS versions, and greyd00r (a heavily modified version of iOS 3) doesn't support it either, only the 3G and earlier. And last I tried that on an iPad half the stuff was broken. 

[BondiBlue]

Last time I used iOS 6 I was still able to download older versions of apps I had downloaded on other devices. And no, you can't run anything newer than iOS 6 on that iPhone. Even if you could you wouldn't want to - it's already slow enough on iOS 6.