Before all my research about noise pollution, I thought that noise only had a certain impact on our hearing, but I never expected that its destructive power was far from that. Just look at the impact on human health“The World Health Organization has calculated that at least 1m healthy life-years are lost every year in western European countries because of environmental noise.” Since noise pollution is so harmful, I want to design an APP that can visualize noise levels and help people report the source. In my APP design there are three major functions. First is detect the noise level and alert people when the noise is harmful. Second is record and report the noise source. Third function is to provide a map that can show our user the average noise level for a certain area based on people’s report.