Based on user reviews, here are three cons and three pros of the Mandolin Tuner Pro and Chords app: **Cons:** 1. **Difficult to navigate**: Some users find the app's interface confusing, leading to longer learning times. 2. **Pitch accuracy issues**: A few users report occasional pitch accuracy errors, which can be frustrating. 3. **Limited chord library**: Some users mention that the app's chord library is not as comprehensive as they would like. **Pros:** 1. **Accurate tunings**: Many users praise the app's fast and accurate tuning capacities, saving time for beginners and pros. 2. **Easy to use**: Users appreciate the app's simple and intuitive design, making it accessible to players of various skill levels. 3. **Helpful learning tools**: Users find the app's chord library, practice exercises, and goal settings features to be invaluable learning aids.