I know a few dozen apps that fit that bill. Bingo Card Creator started as a cross-platform desktop app (that was my only product from 2006 through 2009, when I

I know a few dozen apps that fit that bill. Bingo Card Creator started as a cross-platform desktop app (that was my only product from 2006 through 2009, when I released the online version). It was bootstrapped and was/is profitable. A few others off the top of my head: Perfect Table Plan, Poker CoPilot, Mixed In Key, Balsamiq Mockups (though that eventually turned into "a company"), etc. You'll note that BCC doesn't belong in the same league with any of the above.