Sorry, downloaded keynote for ipad not imac which obviously won't work. Sorry about that. Works now.

I've paid for then downloaded Keynote, nothing happens when I click the icon. Just to check I downloaded some free ones (angry birds) and that doesn't work either. Also they don't show up as being downloaded in my downloads menu. Please advise. Thank you

Hi, this is probably embarrassing simple but is Keynote a tool in iwork or are they separate apps and purchases? Thank you