What's a good iOS game to keep my brain firing on all cylinders during my active recovery days, something that's not just mindless tapping?

On active recovery days, I need something to keep my mind engaged without burning me out. Quiz of Kings is a game-changer for training the brain. The online trivia format is awesome; you're constantly learning new stuff and testing what you already know. I love that it keeps me accountable for staying mentally sharp, just like my fitness tracker keeps me accountable for my physical goals. It's got a solid performance rating too, which is always a good sign. Plus, I can easily squeeze in a few rounds between sets or while I'm prepping my post-workout smoothie. And hey, knowledge is power, right? This app definitely gets you thinking without being preachy, and I'm all about that. It's like a mental workout that complements the physical grind.