...then I started building real apps.
I can't imagine the practical application for this framework? By the time you've built something, optimized it, and likely pulled your hair out getting it to play right with all the forgotten things in web app demos (Ajax, data persistence, security, etc), you probably could have done it native. Additionally, at least by doing it native you'd know that browsers aren't going to come along, update, and wipe out the framework.
Does anyone pay attention to user activity, experience stats? Trying yo habitualize your users into using a web app, ESPECIALLY MOBILE, is a losing battle. If social network giants can't get users on mobile web apps.............therefore picking this framework isn't just building with new tools. It's also trying to onboard users into something they typically avoid.