Based on the users' reviews on the Apple App Store, here are three cons and three pros of the Puzzle Blocks app: Cons: 1. Users found the game too easy and repetitive, with some levels feeling like a "copied and pasted" version of the same puzzle. 2. Some reviewers experience lag and freezing issues while playing, which detracted from their overall experience. 3. A few users felt that the game's monetization model was intrusive, with in-app purchases and ads feeling too prominent. Pros: 1. Users praised the game's addictive and relaxing nature, with many reporting they enjoyed playing it to unwind. 2. Reviewers appreciated the app's simple yet intuitive controls, making it easy to navigate and play. 3. Many users appreciated the game's social features, such as sharing progress and competing with friends. Note: The reviews on the Apple App Store are subject to change and may not be exhaustive.