Hi,
I've read your requirement and we are able to do this project for you.
I have a software company in Vietnam with team of engineers who are skillful in Android Application Development, Java or HTML5-CSS3-jQuery as well as database technologies such as MySQL, SQL Server, etc...
Your requirement is achievable for us right now. Proposal that I give you include:
1. Cost: $200 ($150 still be OK)
2. Time: 20 working days
3. Milestone: 20% upfront + 30% getting app for your beta testing + 50% bug fixing and deliver all stuffs after acceptance.
4. Guarantee: 3 months after acceptance
5. Document: we make comments in source code, for your later improvement.
Good luck to your project. If this proposal can help you, please let me know.
Yours sincerely,