I'm about to have to make a decision like this and could do with some advice. A friend of mine (3D artist / graphic designer) tells me he knows two people who want an app doing. It turns out they're just starting a new company and the app is going to be the product. They have already sold it to one customer and have others in the pipeline.
I discuss the app with them, set out a specification / timeline / cost that they like. But then they start with: Can you set up our email? (yes). Can you do us a website? (yes). Can you do a webapp that the customers can use in coordination with the app? (yes). Etc. etc.
So I say: look, I can do all this stuff but it's going to be a pain to keep charging all the time and then there's going to be support costs on top. I like that your sales driven and seem pretty intelligent and we've got along pretty well so far. How about instead of or as well as cash we talk equity?
They think about it and get back to me yesterday and say yes, they've had a chat about it and would like to do that. We're going to meet tomorrow to discuss a package they've worked out for me.
So what equity should I negotiate for? They have no technical experience and it seems to me that I will basically be doing everything at least to start with. One of them is sales and the other is going to be managing the business (which I have no experience of, I've never been a "founder" before).