After analyzing the user reviews of the app "Number Riddle: Jigsaw Puzzle", I've come up with the following conclusion: **Cons:** 1. **Lack of difficulty progression**: Users complained that the game became too easy too quickly, lacking a sense of challenge. 2. **Too many ads**: Reviewers criticized the app for displaying too many ads, disrupting their gaming experience. 3. **In-app purchases frustrating**: Some users felt that the in-app purchases were confusing or overly aggressive, affecting their overall enjoyment. **Pros:** 1. **Addictive and engaging gameplay**: Users praised the app for its fun and challenging puzzle mechanics, making it hard to put down. 2. **Variety of puzzle types**: Reviewers appreciated the diversity of puzzle types, keeping the game exciting and fresh. 3. **Simple yet effective design**: Users commended the app's clean and intuitive design, making it easy to navigate and play. Note: The reviews can be subjective, and opinions may vary. However, this conclusion is based on the general sentiment and feedback from the users.