Hi there,
I have seen your description and attached ppt, where you have described the screen flow of app in login/logout condition.
Apart from this, I have done android projects in various domains like healthcare, educational and utility products. My main motto to do the project is to satisfy the client as well as their end user. So the end user can also delight while using our application.
And I am eager to work on your xRank project and looking forward to hearing from you soon..