Based on the users' reviews of the Railroad Stack app, here are three cons and pros: **Cons:** 1. "Disappointing user experience with frequent crashes and slow performance." 2. "Limited functionality and lack of customization options." 3. "Some features are confusing and difficult to navigate through." **Pros:** 1. "Intuitive interface and easy to understand for new users." 2. "Houses a large collection of railroad-related content and resources." 3. "Regular updates with new features and improvements implemented." Note: The words used to describe each point are within the 15-word limit.