Have any friends? (Score 1)

I'd approach friends or acquaintances in your personal network who have the relevant skills if you are less than certain about the idea and need a technical look-through. It may cost you - either cash or ownership - but there are benefits to getting an expert involved. Otherwise, if you are dead certain on the idea and have the cash to spare, go the rent-a-coder route. Cheap and you retain control/ownership of the idea.