Supersonic is much more than a UI Framework, it is all of the best tools and components you need to develop hybrid mobile apps in a single place.
Anyone that has real world experience developing hybrid mobile apps knows the hassle and hundreds of different bits and pieces requires for development. It is time consuming and painful.
Supersonic is all about taking out the pain and complexity. It brings together all of the best pieces available instead of reinventing the well + it has some great innovations of its own.
You should try it now.