Congratulations on your launch!

As a startup lawyer, I can give you some of the legal checklist items.

First, you should consider forming a corporation or LLC for the startup. If you've already done this then you're off to a good legal start. You should make sure you have a decent set of Bylaws or a good Operating Agreement so that you can document the ownership and management appropriately.

Second, you should ensure that you have a well drafted Terms of Service and Privacy Policy. The Terms of Service should contain information about payment and subscription terms, content restrictions, and appropriate disclaimers. The Privacy Policy should comprehensively list every piece of personal information you may collect and should accurately describe how you'll use or disclose that information.

Finally, you may wish to trademark your app name or logo if it is unique.

Feel free to schedule a call if you have any legal related questions about your startup!