News (2010-11-09) Jonathan Kimmitt created a pretty GUI frontend for iPad and it is now available on AppStore! Build Instruction 1. Requirements You need a working toolchain (gcc and binutils) for iOS (iPod Touch/iPad/iPhone). For example, you can use the official iOS SDK. In addition, in order to run your O'Caml programs, you need the iPhone Simulator of SDK, registered iOS devices, or jailbroken