From Clomosy Docs
function Clomosy.AppPlatform :Integer;
The platform on which the project is opened is returned. A return value of 0 indicates Windows, 1 indicates MacOS, 2 indicates iOS, 3 indicates Android, 4 indicates WinRT, and 5 indicates Linux.
Example
var
platformStatus : Integer;
{
platformStatus = Clomosy.AppPlatform;
case platformStatus of
{
0 : ShowMessage('Windows');
1 : ShowMessage('MacOS');
2 : ShowMessage('IOS');
3 : ShowMessage('Android');
4 : ShowMessage('WinRT');
5 : ShowMessage('Linux');
}
}