Need an App Developer: iOS, Android, HTML5

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
We are looking for an experienced mobile Android + iOS + HTML5 developer to copy and enhance our existing app.
The app has a search directory basis that sorts listings by distance from user using GPS.
It requires social media and camera integration.
We need to add a new simple user management console that also has a payment mechanism to charge subscribers to update their listings.
The app is free for consumers to use.
It should be relatively easy to do as we have the existing app/HTML5. However, we don't have access to the code anymore.
Any nationality developer is OK but we require excellent English communication.
We will only work with highly rated (4.8+) and experienced developers with a 90+% Completion rate.
The URL + additional specifications will be forwarded to the bidders we short-list.
We are expecting to pay around $700.

Skills required:
Cocoa, iPad, iPhone, Mobile Phone, Objective C
About the employer:
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