Submission process, beta testing, unlisted but public?

Hey Xumm team,

What's the process for submitting our app? Are there beta-testing steps we can take, for example deploying the app publicly, but have it only show up when people scan our QR code?

What we'd ideally like to do is test in private beta on the testate for a while, where we invite people to test, and anyone with the QR code or link can join, but it's not publicly listed. Then when we're ready to list it publicly, we'll switch to main net and publicly list it in Xumm.

So far we've been internal testing with device IDs, but we're thinking of testing with a few hundred people, and obviously that's not well suited for that.

Thanks!

Julian