Respected,
I have worked for a private company as a full time android developer, have developed apps for Vehicle Tracking System and Taxi Dispatch System.
Had done a android project in final year engg named L0G1C, where in there was practice mode as well as Level mode, wherein each level the user had to make a circuit within a given stipulated amount of time with given set of gates.
Upon level completion user was awarded rating based on time elapsed, and consequently next level was unlocked.
Would like to work for you, and I am even open to make part of your app before you award the project to any other freelancer...
Kind Regards
-ManoJ.