The first-generation Corentium Pro app made by Airthings.
The second-generation App is available in Google Play store
If your smartphone or tablet does not have the minimal operational system requirements to run the second-generation of the Corentium Pro app, then this first-generation app will give you access to basic functionalities.
We highly recommend the upgrading of either smartphone or tablet to gain complete access of the second-generation app.
Minimal OS requirements will be mandatory in 2021.