Hello,
I would like to develop project for you. I can complete your project on time and within your budget.
I have experience RESTful API/Retrofit, Material design, device compatibility interfaces, Login/Registration patterns. Besides, I have knowledge with Android Marshmallow nicety(like Permissions) so you're app will be up to newest android version.
I take 25 $ for project, freelancer adds 5 $ so summary it's 30$.