Based on the users' reviews, here are three pros and three cons of the Mandolin Tuner Pro and Chords app, each with 15 words or less: Pros: * Accurate tuning engine and user-friendly interface make it easy to tune mandolin. (10 words) * Chord library is extensive and includes many variations for different playing styles. (12 words) * The app is intuitive and allows for easy switching between tuning and chord modes. (12 words) Cons: * Sometimes the app crashes or becomes unresponsive when trying to tune or play chords. (12 words) * The app could benefit from a more comprehensive learning module for beginners. (11 words) * Some reviewers have reported issues with the app's chord recognition and accuracy. (12 words) Please note that these are general summaries based on user reviews and may not reflect individual experiences or opinions.