Based on the users' reviews, here are three pros and three cons of the Sound Meter HQ app: **Pros:** 1. Accurate readings: Users praise the app's ability to provide precise sound level measurements, making it a reliable tool. 2. Easy to use: The app's interface is user-friendly, allowing users to quickly take sound level readings without hassle. 3. Real-time data: Users appreciate the app's ability to display real-time sound level data, enabling them to make informed decisions. **Cons:** 1. Limited functionality: Some users feel the app lacks additional features, such as sound frequency analysis or noise reduction tools. 2. Calibration issues: A few users report experiencing calibration problems, which can affect the accuracy of the app's readings. 3. In-app purchases: Some users are disappointed by the app's requirement for in-app purchases to access certain features or remove ads.