Programming languages and technologies: Objective-C, Swift, XML, JSON, SQLite. Social networking and VoIP. Source control: Git, CocoaPods. Tools: Xcode. Frameworks: Foundation Kit, UIKit, AppKit, Core Animation, Core Graphics, Core Data, Core Location, Core Bluetooth, Core Audio, Map Kit and others. Team Leader IOS / Mac: $45 / hour. Senior IOS / Mac OS Developer: $38 / Hour. Junior IOS / Mac OS Developer: $28 / Hour.