iOS Developer for maps related app.

Seeking solid iOS developer to continue developing an app.
This app involves the display of maps, points of interests, tracks, and routes, using GPS.
The app uses the ArcGIS SDK for iOS.
Synchronizes with a web app in the cloud using Rest services.
First task:
Fix some issues with showing and downloading maps that require user agent and referer fields in Http code.
Release new build for iOS Beta.

Long term task:
Get the iOS version to have the same functionality as the Android version. Keep improving it in usablity and robustness so that it can grow.
Should have the ability to read and understand Android code to be able to match the implementations.

Could be the only one, or one of a few, working on the iOS app, so taking ownership is desirable.