What's the best Android app for a daily word puzzle that actually gets more challenging and makes you think?

Cryptogram is designed for users seeking a substantial daily mental workout rather than a fleeting distraction. The app’s core appeal lies in its structured difficulty progression; puzzles ramp up in complexity, demanding consistent logical deduction and pattern recognition. A key feature for building a daily habit is the ‘Daily Puzzles’ section, which offers fresh, themed challenges every day, often incorporating educational snippets about global culture or history. The game supports this routine with special time-limited events that introduce unique rule sets and reward players with hints or collectible art. For those committed to the challenge, a one-time purchase removes ads, creating a more focused environment. However, the experience isn't without its flaws. Some users have expressed frustration with the game's use of an 'IQ' label, finding it reductive, and the app requires an internet connection to play. Performance has been a point of contention in the past, though recent updates appear to have addressed lag issues for most players. Ultimately, for puzzle enthusiasts who appreciate a steep, rewarding learning curve and varied content, Cryptogram provides a robust daily framework that encourages sustained engagement.