Liar's poker is an American bar game traditionally played with the eight digits of the serial number on a dollar bill. It became famous through Michael Lewis's 1989 book Liar's Poker about Wall Street traders in the 1980s. It is closely related to the dice game Liar's dice. Here the app draws random numbers, so you need no bills, and there are no stakes. We rank 0 lowest and 9 highest; in the classic version 1 (ace) is highest.
Sources: Liar's poker