Based on the users' reviews of the "ABC Type 3D - Perfect Rush IO" app, here are three cons and pros in English, within the 15-word limit for each item: **Cons:** 1. Some users found the app's design and layout confusing, leading to frustration. 2. A few reviewers experienced glitches and bugs, causing the app to crash frequently. 3. Some users felt the app's difficulty level increased too quickly, making it stressful. **Pros:** 1. Many users praised the app's engaging and interactive design, making learning fun. 2. Reviewers appreciated the app's ability to adjust difficulty levels to suit their needs. 3. Several users reported improving their typing skills significantly after using the app regularly.