Based on the reviews of the app "Monster Addition Subtraction" on the Apple App Store, here are three cons and three pros, each in 15 words or less: **Cons:** 1. Limited content and repetitive math problems become boring over time quickly always. 2. Ads are intrusive and appear too frequently, disrupting learning experience significantly overall. 3. Game mechanics can be frustrating, especially for young children who struggle with addition subtraction. **Pros:** 1. Engaging and colorful monster characters make learning addition and subtraction enjoyable for kids. 2. Easy to use interface makes it simple for parents to track child's progress easily always. 3. Monsters reward system motivates children to practice addition and subtraction daily successfully.