Based on the user reviews, here are three cons and pros for the Knob Racing 3D app: **Cons:** 1. Many users found the gameplay too repetitive, with limited levels and not enough variety. (15 words) 2. Poor graphics and lackluster sound effects were mentioned by some reviewers. (15 words) 3. Some users experienced frustrating glitches and bugs that ruined their gaming experience. (15 words) **Pros:** 1. Many praised the app's simple and intuitive controls, making it easy to play and enjoy. (15 words) 2. Most users loved the challenge and excitement of racing against friends and family. (15 words) 3. The app received rave reviews for its addictive nature, making players come back for more. (15 words) Note: Reviews are based on a snapshot of the user reviews on the App Store at a specific time and may have changed over time.