Touchpad notation

What I’m really missing is a daw-controller with a touchpad OR an app that can make my cell or pad compatible with cubase notations.

So when creating music I can with a digital pen fast an easily edit/add/remove notes in the scorewindow. I’ve seen special software for similar things, but I don’t want to get another musicprogram.
Is something like this done already and if so where can I get it?