AMAZING New app which predicts rain!

I am reminded of a postcard seen in a shop in A Coruna, it depicted an elderly couple in Galician peasant clothes kissing and cuddling as they sit on a park bench in the pouring rain. they are sheltering under an umbrella and the caption was "?Que chova?" - what rain?

I rather think an app for predicting rain in Galicia will be as useful as that one that detects the next bus in London. it will be right often enough to seem accurate and wrong often enough to seem worthy of an up-grade.