Ask HN: Freelancers, how do you handoff iPhone apps to your clients?

For the freelancers here - what do you do when you sell an iOS app to a client? Do you have the client register with Apple (and fill out their own financial information) and then do all the app signing for them?

This isn't a client that could, for example, take the source and compile and sign it themselves, although I will be giving them the source at the time of completion.

Is there an easier way to do this?