Based on the users' reviews, here are three pros and cons of the Pyramid Solitaire Challenge app, each limited to 15 words: **Pros:** 1. Engaging gameplay: Users praise the app's addicting gameplay, offering a fun and challenging experience. 2. Simple to play: Reviewers appreciate the app's easy-to-learn rules, making it accessible to new players. 3. Customization options: Many users like the ability to customize the game with different card sets and layouts. **Cons:** 1. Limited features: Some reviewers find the app's features, such as no undo option, to be lacking compared to other solitaire games. 2. Frequent ads: A few users express frustration with the app's frequent pop-up ads, which can be distracting. 3. Glitches and bugs: A few reviewers report experiencing glitches and bugs that can interrupt gameplay and require restarting.