Found in 1 comment on Hacker News
kranner · 2012-12-19 · Original thread
No doubt OP's apps are good, but I'd think a lot of his success can be attributed to being early (as he himself states in the post as I recall).

As a current App Store indie developer, I'd say you should consider the counter-examples also. I enjoyed a book called Buttonless (http://www.amazon.com/Buttonless-Incredible-iPhone-Stories-B...) which discusses indie games and discloses sales figures.

The average picture is not the rosiest.

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