Is there a good iOS app for a block puzzle game that starts easy but gets brutally hard?

Color Block Jam is a block puzzle game built around a familiar yet challenging core mechanic. Players match colored blocks to clear increasingly intricate patterns from a grid. The appeal lies in its deceptively simple start, where early levels teach basic strategies, before introducing complex layouts and strict move limits that demand careful planning. For anyone seeking a puzzle that escalates in difficulty, the game provides over 800 levels, with reviews indicating that progression beyond the first few hundred requires significant strategic thought. Specific features like the 'rainbow block' power-up help clear stubborn sections, while daily tasks and limited-time events offer alternative challenges and rewards.

However, the game's monetization strategy is a notable consideration for some players. While it's possible to progress without spending, as one reviewer notes, others report frustration with specific high-level puzzles that seem designed to encourage purchases of extra moves or power-ups. The time limit on certain levels also receives criticism from veteran players who feel it can force rushed decisions. Furthermore, a minor but persistent annoyance mentioned in user feedback is the frequent visual updates to the app's icon and interface, which some find disruptive. Despite these points, the core puzzle loop remains compelling for those seeking a long-term, mentally engaging challenge on iOS.