This is a coincidence, just yesterday i checked out Cordova, Ionic (on todo list, but the demo's on the APK's seem to slow :s), Supersonic seems quite interesting also (and a lot easier then Polymer)! But what really interested me are the demos from Google (Namely Paper Elements as UI) with Polymer (it's like AngularJS, but it isn't): https://www.polymer-project.org/docs/elements/material.html Fyi, an index of webcom…
We didn't embrace Polymer more fully for various reasons (like it being a very WIP project still), but the Polymer web components should all work fine with Supersonic apps.
Disclaimer: AG employee here. :)