Yep, I completely agree with the analysis Foundation vs Bootstrap and had pretty much the same experience. Since I am now using it in pretty much every project, I created this ember-cli-addon: GitHub - nadavshatz/ember-cli-foundation-sass: Automatically sets up Foundation 5 SASS in your Ember CLI app. which sets pretty much everything up for you.
Anyway, to get back to topic, we created an ember cordova app (using GitHub - poetic/ember-cli-cordova: A tool for creating hybrid apps using a combination of ember-cli and cordova) with 1.7 + Foundation and it is working pretty well on Android 4.4+ (apart from the fact that you need some kind of hack for loading local videos), but a bit less so on older ones (the webview is quite terrible on devices < 4.4). iOS 7 worked quite well on our preliminary tests and iOS8 should work in theory even better with it’s new webview.
For animations we are using the wonderful https://github.com/ef4/liquid-fire, though http://famo.us/ is on the radar as well once we are looking to get more complex animations/interactions.