06-01-2013 12:27 AM
Since this is in webworks category I'm assuming you want to webworks. I recently picked up bbui.js and have used it to create a pretty native looking HTML5 app. I'm not limited to the framework as I combine it w/ angularjs to reap those benefits. The result is virtually indistinguishable web app from native that's functional and still powerful. There is a BB10theme for jquery mobile if you prefer that(lack of context menu was a dealbreaker for me) it's more flexible.
You can also just use plain jquery mobile and design the UI yourself but I find the BB10 look and feel to be the best.
06-07-2013 07:30 AM
You can use app frameworks like bbUI.js or jQuery Mobile which are good looking and give good performance. These UIs will save your time on developing a User Interface and give you more agility.
06-07-2013 03:48 PM
Also, please refer to the following link for information on best practices for UI.