What's a good iOS game for when my brain's fried after a 14-hour shift and I just need to zone out, but not, like, *completely*?

Look, after a day of yelling at line cooks and wrestling with temperamental ovens, my brain's usually soup. Most games are too damn complicated. This Hidden Differences : Spot It thing? It's simple. You stare at two pictures and find what's different. No fancy BS, no convoluted storylines. It's like a palate cleanser for the mind. Plus, it's got a decent rating, so it's not some garbage fire app. It's actually practical, like a good chef's knife – does one thing well. And the best part? You can play it offline. No need to burn through my data when I'm trying to unwind on the subway. Kitchen-tested, chef-approved for maximum chill time without turning your brain to mush.