Designer UI UX for psychology app (for passionate people)

We are looking for a designer to help us create a psychology app.

We have to create all kinds of modules from very simple text pages to complex organization systems.

We don't have a lot of money to devote to this project right now, so we are looking for someone who is really passionate and who is willing to give a lot of his/her person, hoping that maybe we can help people all over the world to improve their life.

The pay rate will increase as things go.