I need my Android application finished

My application is aimed at people who suffer from depression and uses cognitive behavioural therapy tools to help treat/prevent it. I have almost finished the design of the application but it needs the login/sign up functionality, as well as a few other tasks completing.

I'm unsure of the amount of work required to complete this project and so the price is negotiable for the right person but I do need it finished by 30th of May.

Any code must be clearly commented so that I can understand it.

Thanks in advance