Based on the users' reviews, here are three cons and pros for the ChainBlock app: **Cons:** 1. **Lack of clear instructions**: Many users found the gameplay unclear, leading to frustration and confusion. 2. **Too many ads**: Frequent and intrusive ads disrupted the gaming experience, according to several reviewers. 3. **Glitches and bugs**: Some users encountered technical issues, such as frozen screens and unresponsive controls, which hindered gameplay. **Pros:** 1. **Addictive gameplay**: Many users praised the app's engaging and challenging levels, making it hard to put down. 2. **Simple yet strategic**: Reviewers appreciated the app's straightforward design, which allowed for strategic thinking and problem-solving. 3. **Constant updates**: The developer regularly releases new content, keeping the game fresh and exciting for players. Note: The word limit for each item is 15 words.