Creating your own app is fun. It's your own living creature that lives on thousands or millions of devices and wakes up to entertain or teach people what you designed them to enjoy or learn.
It's Art and it's yours. There is nothing more sophisticated that we can produce than a piece of software.
To make your app work there are millions interdependent lines of code working hard to show your images, play your music and interact with your users.
Your Art, your music, you puzzle shapes will make this app unique.