This app was mentioned in 4 comments, with an average of 1.50 upvotes
I quite like DM Minion and 3D Virtual Tabletop
If you're using D&D 5e, then there's an app called DM5E that seems to work pretty well for lots of stuff.
There's this version?
Edit: Just testing it and I can't read anything on the screen. Bad eyes? Tiny fonts?