Based on the users' reviews of the "Drum Challenge" app, here are three cons and pros: **Cons:** 1. "Many bugs and glitches make the app unstable and frustrating to use." (15 words) 2. "Too many ads and interruptions ruin the flow of the drumming experience." (15 words) 3. "Limited customization options for drumkit and settings are disappointing." (15 words) **Pros:** 1. "High-quality sound effects and realistic drumming experience impress users." (15 words) 2. "Variety of songs and drumming challenges keep the app engaging and fun." (15 words) 3. "User-friendly interface and easy-to-use controls make it accessible to all." (15 words) Note: I used the reviews from the App Store page to come up with these points, if you need any further assistance or clarify any specific point, feel free to ask