What's the best iOS app for a challenging word game where the puzzles have a specific theme?

Word Seekers is an iOS word puzzle game that focuses on thematic deduction, making it a strong choice for players seeking a more mentally engaging experience than simple anagrams or word searches. The core gameplay involves deciphering words from a grid of letters, with every valid answer relating to a specific category displayed at the top of the screen. This design forces players to think associatively, as they must connect the available letters to items, concepts, or people within a given theme like 'Kitchen Items' or 'Famous Landmarks.' A key feature is the hint system, which allows players to spend in-game points earned through play to reveal letters; if points are low, users can opt to watch short video ads to earn them, a model that keeps the game free while providing advancement options. Daily challenges refresh the content regularly, promoting consistent engagement. User reviews widely praise the game's ability to 'make you really think' and its solid performance, though some note that ad frequency can feel high and occasional app freezing occurs. While the hint economy relies on ads or point conservation, the underlying puzzle design is considered clever and sufficiently challenging by its dedicated player base.