as of this moment, huge database of iPhone users might be a main reason to write for iPhone. but in future, android & others might really take off. So in your opinion, what is the most profitable device to write for? and if you have generated some income based on it, do share with us if you don't mind!
for me, i have recently started programming for iPhone but did a few flash animations. 1 for my educational centre which web designers quoted me $6000 for. In the end, i took 150 hours and came up with a reasonable one and i could say that i saved at least $4000 from it.