Based on the users' reviews of the "Drums Master - Real Drum Kit" app, here are three cons and three pros in English, with 15 words limited for each item: **Cons:** 1. Some users found the app's UI layout and controls confusing, leading to frustrating experience. 2. A few reviewers experienced occasional lag or delay in the app's drum sounds and animations. 3. Some users mentioned that the app's sound quality wasn't as good as they expected, with limited customization options. **Pros:** 1. Many users praised the app's realistic drum sounds, with accurate representation of different drum types and techniques. 2. The app's tutorials and lessons helped new users learn proper drumming techniques, with a gentle learning curve. 3. Reviewers appreciated the app's portability, allowing them to practice drumming anywhere with their mobile devices.