16 November 2011: This application has had a major update, see the details in this post
This does a little more than the spreadsheet could, so it has lots of info about what in an ID number does not verify which is very useful.
In addition it includes a awesome new feature a South African ID Number GENERATOR! With this you put in a few required details, hit a button and BOOM! An ID number that will validate.
Important to remember that validation of a number doesn’t mean it actually exists, just the math works. So please don’t use this for anything except interest or development!
(btw screenshots are from 1.1, which is soon to be out – so if you download and it looks different then give it a day or two)