FScore is an open-source Android application to keep track of card games' scores. It currently supports the "Foda-se" card game, a popular game in Brazil also known as "Twin", "Dane-se", "Oh Hell", "Oh Shit", "Elevator", "Blackout", "Bust", "Boerenbridge" and "Up and Down the River".
https://play.google.com/store/apps/details?id=br.net.du.fscore
