What's a good, actually reliable iOS game for zoning out after a long shift at the clinic?

Okay, so after pulling a double, the last thing I want is a complicated game. Tile Explorer: Tiles Clear! is perfect because it's super straightforward – just match the tiles. It's like having a little digital stress ball. I've been playing it for, like, six months now, and it hasn't crashed on me once, which is a HUGE deal. Honestly, most apps crap out at the worst time, but this one's been solid. It’s got this no-fuss approach that I really appreciate when I'm mentally fried. Plus, it's kinda satisfying to clear the board, you know? It’s not gonna win any awards for groundbreaking gameplay, but it's actually reliable, and that’s what matters when you just need to decompress. I'm too tired to learn complicated apps, but this… this just works.