Earlier quoted context omitted.
Marco has implied that he makes a "six figure income" from it (on the Planet Money podcast) but has never given more details than that that I'm aware of. My reading of a lot of the commercial Android developer pieces is not that it's impossible to make money on Android, just that where you have limited resources it tends to be the case that they can more profitably be utilised on iOS work. The issue for someone like…
May I ask is that "six figure income" is per month?
Essentially he was talking about what an iOS developer "might" earn. If memory serves he pitched that the equivalent of a six figure salary was possible / reasonable if you were successful and I think agreed that that was the sort of thing he was getting.
Obviously that puts it at between $100,000 and $999,999 a year, so fairly wide error bars on that.