I've done freelance before but it was graphic design or illustration. Since I've never designed an interface before, and the client has very little money, I'm not sure how to charge them. I'm researching plus designing. I've got to learn all the rules to how to do this before I can even design and it's taking a lot longer probably. I've looked online and the lowest I've seen designers charge is 20/hr. He wants it per/project. These people were professionals and the entire app would cost $25-50K to make! I'm thinking he'll want to give me like $50. I'm just thinking I'll be grossly taken advantage of here and want to be prepared. Does anyone have experience in this?