Based on the users' reviews of the Sudoku Classic app, here are three pros and three cons in 15 words or less: **Pros:** 1. Engaging and challenging puzzles with increasing difficulty levels to keep users entertained. 2. User-friendly interface allows for easy navigation and completion of puzzles. 3. Offline access enables puzzle-solving on-the-go without internet connectivity issues. **Cons:** 1. Limited features and customization options compared to other Sudoku app rivals. 2. Lack of sound or music options creates a silent and uninspiring gaming experience. 3. In-app purchases for extra puzzle packs can be frustratingly expensive for frequent users.