It tells the air quality around you according to the concentration of PM10(Particulate Matter Less than 10㎛).
0~30 ㎍/㎥: good
31~80 ㎍/㎥: not bad
81~150 ㎍/㎥: bad
151 ㎍/㎥ ~: very bad * Currently, this service is only available in Korea.
The Voice App Perf consolidates all the metrics of the Google Assistant and Alexa voice app stores. You can evaluate and compare all the apps on the market and also track your competitors’ trends and developments.