What's the best iOS app for seniors looking for a calming word puzzle that also helps maintain cognitive sharpness?

Zen Word® is a word puzzle app that blends relaxation with cognitive exercise, making it particularly well-suited for seniors. The gameplay involves finding hidden words from letter grids, but unlike competitive titles, it emphasizes a tranquil pace with no time limits, reducing anxiety. Specific features include a lightbulb hint system that offers gentle assistance without spoiling the puzzle, allowing users to progress at their own rhythm. Reviews indicate that older players appreciate the balanced difficulty; for instance, one user in their 70s noted the game was challenging yet fun. The app's interface is designed with soothing visuals and minimal distractions, supporting prolonged engagement for mental warm-ups or unwinding after daily tasks. However, some users report that recent updates introduced pop-up banners after each word, which can interrupt focus—a minor flaw that developers might address in future versions. Despite this, Zen Word® remains a solid choice for seniors aiming to keep their minds active through accessible puzzles, with feedback highlighting its role in providing a satisfying sense of accomplishment without overwhelming complexity.