RegEx Knife
RegEx Knife is a port of the Regular Expressions Tester functionality from Affrus 2 to the iPad. This tool allows you to enter regular expressions into a syntax highlighted editor, enter sample text against which the regular expression is matched, and finally, enter a substitution template which is used to transform the sample text.
Looks great, although the idea of typing regular expressions on the iPad keyboard makes me want to run for the hills.
Update (2014-07-17): The app now available in the App Store.
