Exactly. Although it would be great if it were possible just to purchase an app into the cloud, without installing (hoarding...). I presume this isn't available yet?
But there are some apps that are separate for some reason, right? I can't think of any specific right now (and too lazy to wade thru the devices), but I do remember they were usually called "SomeAppName HD" for iPad and "SomeAppName" for iPhone. Maybe even different prices, or one version free, another not. I suppose pricing policy is the only reason for this separation; or it's because the HD version was added later on and was not integrated yet into "universal" package.