Based on the user reviews, here are three cons and three pros for the Poly Puzzles Coloring app: **Cons:** 1. "Glitches and crashes": Some users experienced technical issues while using the app, causing frustration. 2. "Limited puzzle variety": Reviewers mentioned that the app lacks diversity in puzzle types and designs. 3. "No sharing or saving option": Users were disappointed that they couldn't share or save their creations. **Pros:** 1. "Challenging and relaxing": Many users enjoyed the puzzles, finding them both challenging and soothing. 2. "High-quality graphics and designs": Reviewers praised the app's beautiful and vibrant graphics and designs. 3. "Easy to use and navigate": Users found the app's interface intuitive and easy to navigate, making it accessible to all ages. Note: These points are based on the user reviews available on the app's Apple Store page and may not reflect the full range of opinions on the app.