Can't install free iMovie on mac
I have the free iMovie on my iPhone 6s but can't install it for free on my macbook 10.8.5. Can't find it under purchase in app store. I use 10.8.5 - the newest OS doesn't work that great with my old mac, so I don't want to update. Is this the reason, why I can't install iMovie from app stpre? Can't I get iMovie free on my mac without updating my OS?
MacBook (13-inch Aluminum Late 2008), OS X Mountain Lion (10.8.5)