This app was mentioned in 1 comment, with an average of 2.00 upvotes
I started teaching Android development when Google announced Android in 2007 but just on emulator at the beginning. First devices weren't interesting so I leaved. I came back in 2010 with Android 2.2 and created a meteo application with some interesting features like a meteo map for countries. Called Fast Meteo, app is always available on Play Store . It has just under 50K downloads (49.5K :))