What's a good iOS game to keep my mind sharp while waiting for the plumber to show up? Need something that doesn't feel like a total waste of time.

Look, I'm not big on phone games, but sometimes you need something to do while you're stuck waiting. Find Sort Match is surprisingly engaging. It's not just mindless swiping; you actually have to use your brain to sort things efficiently. I was surprised how quickly time flew by. Plus, it's free, so the ROI is immediate. I figure if it keeps me from losing brain cells while I'm on hold with customer service, it's worth every penny. It's a simple game, but it does the job. Keeps you occupied and might even make you a little sharper. Beats staring at the wall, that's for sure.