Ionic 2 is a very promising hybrid approach. It's still in beta but should be out of it soon (better wait until it's released). The current beta version is quite fast. It has lots of components which are beautiful and has great support for ios, android and windows phone. It's JS (angular2) and html based.
Can you please point to an app built on this? I'm currently looking into hybrid apps and Ionic is probably the best option. It may be fast but not smooth though, e.g when scrolling or pulling a left side menu.
Our app Pacifica, http://thinkpacifica.com, is built on Ionic 1. It is currently showcased on both the Ionic and Cordova websites and we've see a fair amount of success with over a million registered users since launching last year.
