Ask HN: Monetize my webapp as an intl. student on a US F1 visa?

A friend and I are working on a web app that we plan to charge customers for. But I am currently a graduate student in California on an F1 student visa which mandates that I cannot work off-campus. So does anyone in the HN community know if monetizing our web app would constitute as off-campus work?

More generally, what should I do legally as an international student to monetize our web-app? Do I setup an LLC or can I just start accepting payments through my personal US bank account and pay taxes for it? Any help or pointers in the right direction would be really helpful.