Rickshaws and scooters rattle past while women gossip in the gateways, men play games of mahjong, and kids chase each other through the dusty backstreets, dodging boxes and washing lines.

BBC: The perfect trip: China

Five other Jirbo apps, including games that resemble "Tetris" and "Mahjong, " also consistently rank in Apple's top 10.

FORBES: iPhone Apps In The Works