Do you think developers toil with these apps out of kindness for their fellow iPhone users?
If it is free, count on ads. If you pay for the developers efforts, then you deserve ad-free and have a basis for complaint.
I for one feel seeing ads to be a very small price to pay for some of the functionality these free apps give me. And, I even visit these ads on occasion, they teach me about new apps or other products I might be interested in.