Based on the users' reviews, here are three cons and pros of the Block Puzzle Jewel Classic app: **Cons:** 1. Some users find the game too easy and lacking in challenge, stating "not enough levels". 2. Others experience frequent crashes and bugs, leading to frustration and disappointment. 3. A few users criticize the game's graphics and sound effects as "dull" and "unimpressive". **Pros:** 1. Many users praise the game's addictive and engaging gameplay, saying "can't stop playing". 2. The app's simplicity and ease of use are highlighted as positives, with users saying "easy to learn". 3. Some reviewers appreciate the game's variety of levels and modes, calling it "refreshing" and "varied".