The QOL Quality Of Life App will give you important information like Air pollution, building density, green area in a location you choose to check, it also will let you to see what other people in the QOL community think on this area, you just need to point a lovation on the map and you'll get the information you need' you can also mark any kind of polygon on the map and get the same information, it allow you to write your own opinion on this particular area and to see others people opinions