Based on the users' reviews of the Viagogo app, here are three cons and pros in 15 words or less: **Cons:** 1. Many users complain about app crashing frequently, causing inconvenience and frustration. 2. Some users experienced difficulty navigating through the app, finding it tedious and annoying. 3. A few users reported encountering scams and fake listings, which ruined their experience. **Pros:** 1. Multiple users praised the app's user-friendly interface, making it easy to browse and purchase tickets. 2. Many users appreciated the app's ability to provide real-time updates on event information and availability. 3. Some users enjoyed the competitive prices and promotions offered by the app. Please note that these conclusions are based on a general analysis of the user reviews, and individual experiences may vary.