This app provides real-time (1 minute) fine dust information and real-time notification services. You can receive real-time push notifications when air quality worsens or improves. Other fine dust apps have a measurement delay of more than an hour, so they may provide inaccurate information in rapidly changing air quality situations. This app is the only one that allows you to check rapidly changing fine dust conditions by the minute. However, it only provides data collected from a real-time fine dust measuring device called TAM.