Ratings & Reviews performance provides an overview of what users think of your app. Here are the key metrics to help you identify how your app is rated by users and how successful is your review management strategy.
User reviews affect conversion to installs and app rating. Featured and helpful reviews are the first to be noticed by users and in case of no response can affect download rate.
The noise meter (noise measuring aparatus). There may be an error of measurement for each smart phone. You can measure how much noise around him. You can check the maximum and minimum values to start You noise measurements. It is recommended to use a high-performance noise meter for accurate noise measurement.