I agree that QML as Edje by separating UI and code provide the same solution. In some case, it will be providing one Edje/QML file per device, sometime you can do with one. As an example of what, we can do with Edje, look at this video around 0:34 : http://www.youtube.com/watch?v=y82SVGFvjG4 . Today it's even possible to take the finger size and scale into account, but you get the idea. It take some work and it's not always a good idea, as you may want sometime to have really different layout for different devices, but the technology provide the means to do it.