Based on the reviews, here are three cons and pros of the app: **Cons:** 1. Lack of English support: Many users struggled with the app's Japanese language setting, leading to frustration and difficulty using the app. 2. Limited features: Some users felt that the app's feature set was too limited, making it difficult to achieve their fitness goals. 3. Technical issues: A few users experienced technical glitches, such as crashes and freezing, which hindered their ability to use the app. **Pros:** 1. Effective workout routines: Many users praised the app's workout routines, saying they were fun, engaging, and helped them achieve their fitness goals. 2. Customization options: Users appreciated the app's ability to customize workouts based on their fitness level, goals, and preferences. 3. User-friendly interface: The app's interface was easy to navigate, making it accessible to users of all fitness levels and technical backgrounds.