Based on the users' reviews of the idle Crypto Mining app, here are three cons and pros in 15 words or less: **Cons:** 1. Many users report being unable to claim rewards or experience sudden app crashes. 2. Difficulty in understanding game mechanics and lack of clear instructions led to frustration. 3. Some users experienced slow mining progress and felt it was too time-consuming. **Pros:** 1. User-friendly interface and engaging gameplay kept many players entertained for hours. 2. The option to mine different cryptocurrencies and diversify portfolio appealed to many. 3. Some users appreciated the educational content on blockchain and cryptocurrencies.