Based on the users' reviews on the App Store, here are three cons and pros of the "Cube Inside" app: **Cons:** 1. Some users find the app's learning curve steep, with confusing navigation and tutorials. 2. Limited content and exercises, leading to boredom and stagnation for advanced users. 3. Technical issues, such as slow loading times and occasional crashes, detract from the experience. **Pros:** 1. Engaging and addictive gameplay that challenges users and encourages problem-solving skills. 2. Effective in developing spatial reasoning and 3D visualization abilities, as claimed by users. 3. Portable and accessible, with a compact design that fits easily on any device. Please note that these conclusions are based on the user reviews on the App Store and might not reflect the entire range of opinions on the app.