As a software engineering student having secured my first internship, I'm trying to be a little more ambitious in applying for my second one. As such, it's a given that I present some of my code I've worked on on my Github profile.
However, I've spent nearly all of my coding time working on my startup (of which I own and am the sole developer of), which is a web application in the private sector. While I'd love to show it off, a demo of the app is not something I'd like to be public. How can I position this to both show off the app/code to potential employers and increase my candidacy?