Based on the user reviews on the Apple App Store, here are three cons and pros for the "Who's Who" app: **Cons:** 1. Limited functionality in terms of search and filtering features, making it inefficient to use. 2. Poor user interface design, causing confusion and decreasing overall user experience. 3. Technical issues and bugs, leading to frequent app crashes and errors. **Pros:** 1. User-friendly platform for discovering and connecting with professionals and experts worldwide. 2. Convenient and easy-to-use interface for searching and identifying individuals. 3. Wealth of valuable information and insights from verified professionals and experts. Note: The reviews on the Apple App Store are subject to change over time, and this analysis is based on the available reviews at the time of my knowledge cutoff.