Based on the user reviews, here are three cons and pros of the Tether Master app: **Cons:** 1. "Crashes frequently" - Disappointed with app's instability and lack of performance. 2. "Poor customer support" - Company unresponsive to issues and user requests. 3. "Limited functionality" - App doesn't deliver on promised features, leaving users underwhelmed. **Pros:** 1. "Easy to use" - User-friendly interface makes it simple to access features. 2. "Solid connection" - Tethering works well with minimal lag or drops. 3. "Freemium model" - Good balance between free and premium features, with in-app purchases available.