Earlier today a phone game called Little Healer made the rounds on Twitter. This game is exactly what it says on the tin: you are a priest with suspiciously familiar priest spells, and you get to heal a raid through suspiciously familiar raid mechanics.
It’s fun. And surprisingly difficult. And, come on, you know it’s a legitimate simulation of healing when one of the reviews says it’s really just an upgraded version of Whack-a-Mole. (Because come on, that’s what healing is.)
Anyways, you can get it for Apple and Android, and be prepared to pour more time into it than you expect. Oh, as a final note: there are bugs present, but the developer seems to be actively chasing these down (at least he is on the game’s official subreddit), so hopefully these get fixed soon.