Well the game is in the app store but unavailable in my country.
https://play.google.com/store/apps/details?id=com.paradoxplaza.knightsofrpg3
You may try installing it with VPN on. Some threads here stated it's available in New Zealand.
If you mean for similar games, not really; the original Knights of Pen and Paper is good, and certainly the only game vaguely close to KoPP2 that I've played. It sucks that KoPP2 improved on the gameplay so, so much, but continues to fail so, so badly to monetize it consistently or reasonably.