Ruben and Lullaby

Here's something I found mentioned in Digital Storytelling - an app/short story called Ruben and Lullaby I don't think it's available anymore, but here's a video:

it's very short, and is just about a couple having an argument - you tilt the screen to go between characters, and shake it to make them angrier/rub it to calm them down. It's a bit choose your own adventure in the sense that it has multiple endings depending on if you make them angrier or not.