>It took less than 15 minutes for a person with no experience in any part of the stack to take an existing single user app and make it a multi-user application with robust security and data storage. […] Bravo, hood.ie, brav-fucking-o. I find that extremely hard to believe.
I think you'll find that you can make a multiuser app from a single user app rather straightforwardly in a day. Although 15 mins would be only for a Q expert.