Based on the user reviews, here are three cons and three pros, with 15 words or less for each: **Cons:** 1. Glitchy performance affects app functionality, causing frustration and wasted time. 2. Limited customization options restrict users' ability to personalize their testing experience. 3. Poor customer support and communication lead to unresolved issues and abandonment. **Pros:** 1. TestRunner's intuitive interface simplifies testing process, making it accessible to beginners. 2. Comprehensive feature set offers a wide range of testing options and scenarios. 3. Real-time analytics provide actionable insights, helping users identify and fix issues quickly.