Hi,
Android expert here! I have about 2 years experience in Android development, and I'm here for helping!
I've completed some small + big projects here, on freelancer.com, you can view my feedback. Beside that, I have an android app is available on Play store that been written by XDA-Portal (at [login to view URL] - you will see my name - cloudvn on the article).
About this project, I think $80 is fair, if you don't think so, just let me know, we can discuss more. And I am sure I can complete it within 1 day with fully comment code.
Looking forward to working with you.
Regards,
Don