The Country Airstrip Guide Windows App was previously branded as "Airstrips Online" and "Country Airstrip Guide Online".
The Windows App can be installed on any version of Windows. An internet connection is required, it cannot be run off line.
There is no native version for MacOs, iOS, iPadOS or Android.
However, the Windows App will run seamlessly on your Apple Mac using a Windows Virtual Machine. See Parallels Desktop, VMWare Fusion or similar.
Click here for the download page.