<p>What is the masked text provider used for? Why is it different from regex?</p>

<p>Is it possible to translate the regex format to mask or vise versa ?</p>

<p>Thanks</p>

A masked edit area forces the user to fill the field in a certain way: e.g. a mask that looks like ### will only allow a maximum of 3 numbers to be entered.
A regular expression, on the other hand, is normally only checked for after the user has entered all the text. The validation happens too late to provide feedback on a character by character basis.