I would like to develop a custom webpart for a public facing website that DOESNT appear in an IFrame, after trying all the tutorials here "http://msdn.microsoft.com/en-us/library/office/apps/fp179930.aspx" it appears I cant do this, the only option is creating a on-premise hosted app, but wsp files can't be enabled on "Office365 hosted websites" I need a plugin that for example can be downloaded from app store and wont appear in an iframe for the purpose of SEO etc.
Is there another solution?