Based on the users' reviews, here are three cons and three pros: **Cons:** 1. Some users found the app's layout and user interface confusing and difficult to navigate. 2. A few users reported issues with the app's sound quality, citing distortion and unclear notes. 3. Some users were disappointed with the lack of tutorials or beginner lessons to learn the Santoor. **Pros:** 1. Most users praised the app's high-quality audio samples and realistic Santoor sound reproduction. 2. Many users appreciated the app's large music library and ability to search for specific songs. 3. Users praised the app's user-friendly feature that allows slow-speed playback for practicing and learning.