If I understand it right, you can write iPhone apps and put them into the Apple Store to be sold. Of course whether anybody will buy them is another question. This is where the "small amount of money" part of the question comes into play, as in "Zero is a small amount".
Zero isn't an amount i believe its a concept as it is nothing?!
But yes back to my question. I am not asking about get rich quick bollocks I'm simply asking like apps is their something that developers can develop to improve personal finance. However at the same time is their another product anyone can think of apart from apps?