Jack Rabbit Mobile has spent plenty of time studying the complex technology that defines mobile applications for the latest smartphones and tablets. This American web design company is passionate about building custom applications for Apple's mobile gadgets. Therefore, the agency's programmers have mastered Swift, which is a programming language that has an open source license. This syntax must make up the bulk of any app that is optimized to run on the iOS platform. Additionally, the Cocoa Touch framework plays a key role in the proper functioning of iPad and iPhone utilities. This technology is engineered to respond to a user's input on a touch screen. Robust iOS apps must also be compatible with external web servers and hosts that are powered by cloud technology. Mobile users should be able to access their favorite apps without having to log into websites via the Apple Safari web browser or other portals.