Why is there no Apple TV remote app for mac os?

How come apple developed a remote app for the ios that lets you control Apple TV from your iphone/ipad but they can't make one that lets you control it from your macbook?

I know it sounds lazy, but a lot of the times I am on my laptop while watching TV and it makes no sense that they haven't developed a way to remotely control your Apple TV from your computer.

Anyone know a way to do this?