Ideally, the applications that have specially designed layouts for size/resolution should be noted and easily searched. (It is a big difference to have a table

Ideally, the applications that have specially designed layouts for size/resolution should be noted and easily searched. (It is a big difference to have a tablet with the same resolution as a 4" mobile phone. They need different designs and layouts for good use.) And no, I have no idea how to design such a system for Android -- especially I can't see how you could make one which couldn't be trivially gamed.