Based on the user reviews, here are three cons and pros of the Numberlink 2000 app: **Pros:** 1. Engaging puzzle game with addictive logic exercises, challenging yet rewarding. 2. Intuitive interface and simple rules make it accessible to new players. 3. Regular updates with new puzzle packs and modes keep the game fresh. **Cons:** 1. Limited puzzle variability and repetition in older levels can lead to boredom. 2. Sometimes, the app crashes or freezes, causing frustration and lost progress. 3. No hint system or tutorial for beginners, can be overwhelming for new players.