Based on the users' reviews of the Jigsaw World app, here are three cons and pros in 15 words or less: **Cons:** 1. Many users find the app's ads too intrusive and frustrating. 2. Some users report encountering annoying pop-ups and unnecessary prompts. 3. A few users experience lag and performance issues on older devices. **Pros:** 1. Users praise the app's visually appealing and colorful jigsaw puzzles. 2. The app offers a wide variety of puzzle pieces, shapes, and sizes. 3. Many users appreciate the app's relaxing and calming atmosphere, perfect for unwinding.