Looks that is just the product from http://en.chesstutor.eu
I can't say anything about the software but it is based on the Step Method (Stappenmethode), which seems to get good reviews on the forums. I know the lower steps are geared towards lower rated players.
You can read more about the book version on their site:
http://www.stappenmethode.nl/en/
Hello guys,
Thinking of purchasing this software, (Chess Tutor step 2 and 3 (Shredder)
anybody familiar with it? Opinions and suggestions?
Thank you