A simple native Android location tracking app

Workflow required: 1) User registration 2) User login 3) Location tracking start (immediately after login, the 1st result will be collected) 4) Every 30mins it will collect the below: (Result collection) 4.1) User current location example: [login to view URL],103.774603 4.2) the street address nearest to a specific point via reverse Geocoding 4.3) Date and time collected 5) Result collected will be saved in an online MySQL server 6) To stop the tracking, user will need to logout from the app. (To start is to login again) Note: Each user registration detail will be saved in MYSQL server and per result for each user will be saved accordingly in the MYSQL server too. IMPORTANT: 1) No upfront. Only escrow via freelancer. Payment is release only when work is done completely and source code is given to me. 2) Is a simple app. I expect to get it done in 1-2 days time. Priority will be given to developer who already has a working model and just need to save to MySQL server 3) Budget at 40USD. Please bid with confident and competitively. More work will be provided if current work is done accordingly and within budget Thanks. All the best.