What's a good iOS game for de-stressing that's also surprisingly engaging and doesn't require a huge time commitment?

Hair Challenge, from Rollic Games, presents a novel approach to the endless runner genre. While the premise seems trivial – growing your hair as long as possible while avoiding obstacles – the algorithm is surprisingly elegant in its execution. It’s intellectually satisfying to optimize your route and see your hair grow to impressive lengths. The increasing difficulty keeps you engaged, and the levels are short enough to be completed during a quick break. This would be pedagogically sound for students needing a brief mental reset between study sessions. Plus, it's a visually appealing game, which is always a bonus. I find it's a well-researched design that offers a pleasant distraction without being overly demanding.