This website helps you keep score of a 'Oh One' darts game. Substraction is hard, more so if you had a beer too much!
Supports 2 to 4 players.
You can enter player name.
There is a 'next player' button in case somebody fouls.
There is a 'undo' button that erases the last shot.
You can use it from your pc, mobile phone or tablet.
There is a full version and a mobile version which can be handy if you use a device with a small screen size.