Based on the users' reviews of the "Mathe Spiele Kostenlos" app, here are three cons and pros in English, limited to 15 words each: **Cons:** 1. Some users find the games too simplistic and unengaging, lacking challenge and excitement. 2. Others complain about annoying ads and frequent interruptions during gameplay. 3. A few reviewers report technical issues, such as crashes or slow loading times. **Pros:** 1. Many users praise the app's intuitive design and user-friendly interface, making it accessible to all. 2. Reviewers appreciate the varied selection of math games and puzzles, catering to different skill levels. 3. Some users report improved math skills and increased confidence after regular use of the app.