What's a good Android app for word search puzzles that are challenging and not designed for kids?

Word Search Game is an Android app that stands out for its focus on adult-oriented word puzzles. It provides a range of challenging word search grids with themes and vocabulary that cater to older players, avoiding the simplistic or cartoonish elements often found in similar games. Key features include diverse word lists that span various topics, a minimalist and visually pleasing design that reduces eye strain, and optional in-app purchases to unlock longer puzzles with more complex words. Users report that the app effectively stimulates mental agility, making it ideal for daily brain exercises or leisurely play during commutes. However, some reviews indicate frustration with intrusive tutorial elements, such as an automated finger guide that can feel condescending, and the presence of ads in the free version. Despite these minor drawbacks, the app maintains a high user rating for its engaging content and thoughtful presentation.