"sell a quarter million [dollars] of software [over 7 years], allow you to quit your day job, and fund your software business"

Glad for you that your product has given you that freedom, but I don't think there are many devs who would be comfortable quitting a day job for circa $35K gross ARR...

Edit to say: I see from the link elsewhere that you publish your numbers (kudos), and that gross mean ARR for the last 4 years is $51K, which is a passive income I wouldn't say no to! Doesn't change my position on quitting the day job however.

Honestly, BCC is kind of a mistery around here.

Old people, man. And the people who take care of old people. I know it's not typically HN target demographic, but old people need improvements in their lives, too.

Not old people. Teachers. The distinction is vitally important. BCC solves a professional problem that teachers will pay money for. It's not about entertainment.

I thought BCC was aimed at teachers? Various implementations of bingo are commonly used as teaching aids, test review games, etc.

Though I agree I'm amazed at its success. It's one of those ideas I'd have dismissed as "you could never make money doing that."

has Bingo Card Creator in fact sold 250,000 pcs.?

I meant that quote to read as "dollars." My bad. It's at somewhere north of $250k lifetime -- you can probably find it here http://www.bingocardcreator.com/stats/sales-by-month . (I don't keep tabs on it very often anymore.)

For those wondering, the relevant line: "All time $277,447.49"

While glancing at the data though, it appears something must have shifted about 12 months ago and you're on track to make a lot less than you had up through 2012.

Saturation maybe?

Search engine ranking changes is more like it. Mostly due to Google algorithm changes.