Based on the users' reviews of the "ShakeIt 3D" app, here are three pros and three cons: **Pros:** 1. Users praised the app's unique 3D feature, saying it's a "game-changer" for exercise and fun. 2. Many users appreciated the variety of exercises and routines available, "keeping it fresh" and engaging. 3. Some users liked the social sharing feature, saying it's a great way to "stay motivated" and track progress. **Cons:** 1. Some users complained about frequent crashes and bugs, citing issues with app stability. 2. Many users mentioned difficulty with navigation and user interface, finding it "cluttered" and "confusing". 3. A few users were disappointed with the lack of customization options, saying it's "too limited" and "not tailored" to individual needs. Please note that these are general summaries based on the user reviews, and opinions may vary.