None.
Sorry.
Apple ended support for all 10-11-year old iOS devices 6 years, ago, in 2016.
Third party app developers abandoned and stopped supporting these 10-11 year old iOS devices 4 years, ago, in 2018.
There are, virtually, NO MORE third party apps available from the iOS App Store, any longer!
Third party compatible apps for such old devices are few and far between, now, in 2022.
This includes apps for both iOS 9 AND iOS 10 devices and, throughout 2022, ALL iOS 12 ONLY devices!
AND, NO WAY to, initially, install any older, compatible, third party apps into this old iPad, any longer!
NO MORE SUPPORT! NO MORE APPS!
All 2011-2012 iPad 2, 3, 4 and 1st gen iPad Mini models are fully and completely unsupported AND obsolete!
You won't find ANY third party apps for that iPad.
Sorry.
A 2012 iPad 4th gen has very limited use, now, in 2022.
That iPad is, now, over 10-years old.
It is simply too old.
Sorry & Good Luck to You!