Based on the users' reviews, here are three cons and pros of the app: **Cons:** 1. Some users found the ads to be intrusive and annoying, disrupting gameplay. 2. A few reviewers complained about the app's difficulty setting, feeling it was unrealistic. 3. Some users experienced crashes and freezes, especially during longer puzzles. **Pros:** 1. Many users praised the app's user-friendly interface and clean design. 2. Reviewers appreciated the app's wide range of puzzle difficulties and sizes. 3. A large majority of users complimented the app's addictive gameplay and challenging logic.