I have read several Corona guides that suggest using 320x480 for the design resolution for good reasons, such as Google and Apple’s recommendations and the widget library. However, it would be more convenient in most games I can imagine to use a 3:4 aspect ratio rather than 2:3 because when using 3:4, I only need to plan for taller screens (I’m pretty sure almost no one uses 4:5 devices). With 3:2, I have to accommodate the common taller aspect ratios and the shorter 3:4.
In summary, would using a 3:4 design resolution cause headaches with the widgets library and compliance OS recommendations? Would 240x320 be compatible or does 320 need to be the width?