On the 10-minute question: the answer depends entirely on who your actual users are, and right now you're guessing. The privacy crowd might want shorter. People using it to share a quick note with a coworker might want 30 minutes.
Before optimizing the timer or the paid model, I'd suggest watching 5-10 people go through the flow from landing page to creating a room to sharing the link. The create-and-share UX is going to be more important than the timer length — if people can't figure out how to get someone into the room fast enough, the 10-minute clock becomes the wrong problem to solve.
Thanks!! this is really helpful perspective.
the create > share > join flow is probably the first thing I should validate. If people can’t get someone into the room smoothly, nothing else matters.
really appreciate the feedback!!