Based on the user reviews, here are three pros and cons of the "Zen Master" app, with 15 words or less for each: **Pros:** 1. Users praise the app's calming and relaxing ambiance, helping reduce stress and anxiety. 2. Many find the meditations and guided sessions to be informative and easy to follow. 3. The app's clean design and user-friendly interface make it enjoyable to use. **Cons:** 1. Some users criticize the limited free content, urging developers to add more free features. 2. A few find the app's music and sound effects to be too repetitive and monotone. 3. A few users experienced technical issues, such as crashes and lag, during usage. Please note that these are general summaries and may not reflect the opinions of all users.