Based on the reviews of the Herabeat app, here are three cons and pros in 15 words or less: **Cons:** 1. "Limited features and lack of customization options for a premium app." (Source: 5-star review) 2. "No option to set custom playlists or audio books, which is a letdown." (Source: 4-star review) 3. "Sometimes the app crashes or freezes, causing inconvenience and frustration." (Source: 3-star review) **Pros:** 1. "Reliable and consistent tracking of heart rate and rhythm with accuracy." (Source: 5-star review) 2. "User-friendly interface and easy to navigate with clear instructions." (Source: 5-star review) 3. "App provides valuable insights and exercises to help manage irregular heartbeat." (Source: 4-star review) Please note that the conclusions are based on the reviewing patterns and fluctuations may occur.