ManualCorrect Pro is the latest Tweak to be launched on the Cydia Store. It will take care of a lot of tensions while typing and make your typing much faster. It allows users to set a shortcut for any word, so whenever you choose the shortcut it brings the whole word in front of you. It can let you choose a correction which will prevent a word being automatically inserted as it would occur on a native iOS device.
The biggest new feature that ManualCorrect Pro offers over its predecessor is the option to add your own manual corrections.
As it stands, the original ManualCorrect was already an extremely competent alternative to the anger inducing iPhone auto correct; the Pro version is just the icing on the cake.
ManualCorrect Pro is available for $0.99 on Cydia for those of you with jailbroken iPhones.