The most important thing to note in that article is the revenue graph near the end.
You might make a few $K in on the first day, but if it's all downhill from there, you don't have a sustainable business.
That's not to say this guy hasn't made an impressive accomplishment (which getting any game in the top 25 is) - just be wary of the stories of "overnight success" that we hear now and then on the app store.
I think 'all downhill from there' is pushing it a bit far - I certainly don't want my story to put off any potential developers! If I wasn't such a sensible / boring fellow I could still (a year later) be comfortably living off my monthly income.
You might make a few $K in on the first day, but if it's all downhill from there, you don't have a sustainable business.
That's not to say this guy hasn't made an impressive accomplishment (which getting any game in the top 25 is) - just be wary of the stories of "overnight success" that we hear now and then on the app store.