There's a way to transform my app to universal app?
This is to modify my application and make it work both on the iPhone/iPod touch and iPad, running natively on ipad with your screen proportion, etc..
PS: I know all iPhone app works on iPad, but works on iPhone's proportion, 320x480.
You could try using
Titanium.Platform.DisplayCapsand check for the platformWidth or platformHeight to see what screen dimensions you are on, then act accordingly.
Or you could use just Titanium.Platform.model to see what type of device your app is on. [ https://developer.appcelerator.com/apidoc/mobile/1.2/Titanium.Platform ]
Another thing to think about when sizing things is to use the left and right properties, instead of setting a width. That way you could easily alter view/label sizes for any screen and in any orientation.