Based on the user reviews of the app "Memory Wax" on Apple's App Store, here are three cons and pros, each limited to 15 words: **Pros:** 1. Users appreciate the app's ability to help improve memory and concentration skills in a fun way. 2. Many users report significant improvements in their memory after using the app for a few weeks. 3. The app's gamification and reward system make learning and practicing memory exercises enjoyable. **Cons:** 1. Some users find the app's instructions and interface confusing, leading to frustration. 2. A few users experienced technical issues, such as app crashes or memory leaks, during use. 3. A few reviewers felt that the app's limited content and exercises become repetitive and unengaging.