Based on the user reviews of the BU Chord app on the App Store, here are three cons and pros in 15 words or less each: **Pros:** 1. **Accurate chord diagrams**: Users appreciate the app's precise and clear chord diagrams with finger positions marked. 2. **Easy to navigate**: The app's simple and intuitive interface makes it easy for users to find and play chords. 3. **Convenient practice tool**: Users find the app helpful for learning and practicing chords on-the-go. **Cons:** 1. **Limited chord library**: Some users are disappointed by the lack of chords in the app, including rare or complex ones. 2. **Limited editing options**: Users wish they could edit or add custom chords, but the app lacks this feature. 3. **Occasional crash issues**: A few users experience occasional crashes or freezes, requiring them to restart the app.