Based on the users' reviews of the "Happy Christmas Jigsaw Puzzle" app, here are the cons and pros: **Cons:** 1. Limited level selection: Some users complain about the limited number of levels and puzzles available. 2. Advertisements intrusive: Users find the ads to be annoying and intrusive, disrupting their puzzle-solving experience. 3. Glitches and errors: A few users report encountering technical issues, such as puzzles not loading correctly or game freezes. **Pros:** 1. Challenging yet relaxing: Users praise the app for providing a fun and challenging yet calming experience. 2. Beautiful graphics: Many users appreciate the app's colorful and festive graphics, making it a joy to play. 3. Easy to use: Most users find the app easy to navigate and use, with a simple and intuitive interface. Note: The reviews from the Apple App Store may not be entirely positive or neutral, so the above cons and pros are based on the general sentiment of the users' reviews.