iOS
iPhone Application Development
Mobisy started to develop iPhone applications from the first iPhone 3G days. This enthusiasm has continued into iPad as well and now Mobisy prides to have designed, developed and deployed some of the most functionally rich, visually appealing and seriously complex applications both on iPhone and iPad. Developers in Mobisy have the expertise in iPhone Software Development Kit (SDK), Cocoa Touch / Objective C, Xcode IDE, Interface Builder, OpenGL ES, Unity 3D Engine, Open AL, Instruments Testing, Memory Management, Audio Video Foundation Framework, Audio Queue Services Programming, Core Audio, Media Player Framework, Quartz, Core Animation, Core Graphics, Animation, CFNetwork Programming, BonjourWeb, XML Parsing, RPC XMLFramework, Threading, WebKit Programming, Secure Coding, Accelerometer, GPS, Stream Programming and Core Location Framework.
iPad Application Development
By now, one thing we know is that the iPad is not simply a larger iPhone, nor is it a smaller computer. Developers have been quick to port their apps from the iPhone to the iPad to ensure they don't miss out on this trend, but there are big differences in the underlying specs and form factor of the iPad that make this a fundamentally different user experience.
The iPad, unlike it's telephonic counterpart (the iPhone), presents users and developers with a bountiful playground of screen space. While it may seem to be just a matter of presenting more stuff to the user, it is no longer practical/optimal to present information and provide interaction using the same methods/design paradigms
Universal Application Development
iPhone SDK 3.2 supports the development of Universal applications. A Universal app is optimized to run on all iPhone OS devices-it's essentially an iPhone app and an iPad app built as a single binary. The first step in making a Universal app is to create user interface designs for each of the form factors-one design for iPad devices and another for iPhone/iPod touch devices, based on following factors - Orientation, Layout, Gestures, Split views, Popovers etc.
OpenGL
OpenGL ES is the lowest-level API that developers use to program 2D and 3D graphics on the IOS.
Cocos2D, Sparrow, Corona, or Unity, these are all built on top of OpenGL!