To iOS apps you must be able to program, regardless of whether you want them through the App Store or via Cydia ban. People who jailbreak apps and tweaks activity to go get it in the future much easier. Developer James Spencer is in fact working iOSOpenDev, a development with Xcode templates that you common-jailbreak tweaks easy to make.
The development environment contains command line tools, dynamic libraries, Message Center widgets, SBSettings switches and Mobile Substrate-tweaks. With iOSOpenDev you jailbreak apps with Apple's Xcode interface. The. Deb files needed for an app in Cydia to deliver iOSOpenDev can also supply. Are you planning to make their own apps outside Apple, it's worth this project monitor. It's probably next week available.
Below you can see how iOSOpenDev an SBSettings toggle-making: