iOS Application Development
ownCloud provides an official ownCloud iOS client, which gives its users access to their files on their ownCloud. It also includes functionality like automatically uploading pictures and videos to ownCloud.
For third party application developers, ownCloud offers the ownCloud iOS library under the MIT license.
iOS ownCloud Client development
If you are interested in working on the ownCloud iOS client, you can find the source code in github. The setup and process of contribution is documented here.
You might want to start with doing one or two junior jobs to get into the code and note our General Contributor Guidelines.
Note that contribution to the iOS client requires signing the iOS addendum to the ownCloud Contributor Agreement. You are permitted to test the iOS client on Apple hardware thanks to the iOS license exception.
ownCloud iOS Library
This document will describe how to the use ownCloud iOS library. The ownCloud iOS library for iOS allows a developer to communicate with any ownCloud server; among the features included are file synchronization, upload and download of files, delete rename and move of files and folders and share files or folders by link among others.
This library may be added to a project and seamlessly integrates any application with ownCloud.
The tool needed is Xcode 6, this guide includes some screenshots showing examples in Xcode 6.