Based on the users' reviews, here are three cons and three pros for the Aer Lingus Classic app: **Cons:** 1. Technical issues: "Frequent crashes and crashes, making it impossible to check-in or retrieve boarding pass." 2. Limited functionality: "App offers limited features, such as no option to upgrade or pay for seat selection." 3. Poor UI/UX: "App's user interface is cluttered and confusing, leading to frustration while navigating." **Pros:** 1. Convenient travel planning: "App allows easy checking-in, seat selection, and viewing flight schedules." 2. Smooth check-in process: "Check-in and bag drop process is seamless, saving time at the airport." 3. Easy access to flight info: "App provides real-time updates on flight status, ensuring travel smoothness." Please note that these are condensed summaries of the user reviews and may not reflect the full range of opinions.