Dear Sir/Ma'am,
I looked at your given link and I am ready to work on it but I have few questions so please look at it and let me know it's answers:
1) Do you have any design?
2) Will you provide web service?
I possess 4+ years of experience senior Android Developer so I am best fit to your requirement.
Please set up call meeting once so we can go on same path of understanding.
Look forward to your positive response.
Regards,
Shailesh