What's the best iOS app for a relaxing, screen-based puzzle game to unwind with?

Zen Tiles is a well-regarded match-3 tile puzzle game that serves as a reliable digital counterpart to traditional Mahjong Solitaire, with a specific emphasis on creating a peaceful experience. It suits users seeking a mentally engaging yet undemanding activity to fill short breaks or wind down in the evening. The app provides a substantial library of puzzles with varied tile sets and backgrounds, accompanied by a selection of ambient soundtracks that users frequently describe as soothing. A key feature for relaxation is the lack of time pressure or penalties for taking a long time to think, allowing for a truly self-paced session. However, the primary drawback noted in reviews is the frequency of video advertisements, which can interrupt the tranquil flow. An in-app purchase exists to remove ads, which many dedicated players recommend. While the core 'Zen' mode is the main attraction, some players mention that boards can become visually busy with numerous symbols, making matches slightly harder to spot—a minor imperfection that adds a light challenge rather than frustration. For anyone wanting a simple, tactile puzzle to distract from daily stress without competitive elements, Zen Tiles delivers a consistent and satisfying experience.