Based on the user reviews of the Color Block 3D app, here are three cons and three pros: **Cons:** 1. Limited color palette options, making it hard to find suitable colors. 2. Issues with line thickness and accuracy, leading to frustrating experiences. 3. No export option for saved artwork, limiting sharing capabilities. **Pros:** 1. Intuitive interface and ease of use, making it perfect for beginners. 2. Unique 3D effect and perspective, adding visual interest to artwork. 3. Excellent value for the price, offering a satisfying creative experience. Let me know if you'd like me to help with anything else!