10,000 - 50,000 downloads
by Darryll Anderson on 25/02/2014
The tutorial alone is well worth the download. This is a strong option.
by Isaac Steimle on 16/02/2014
Some of the tutorials are confusing and some of the challenge questions don't have correct answers.
by A Google User on 03/11/2012
Hmmm well its oky if you want to practice it but not to learn it 3 stars
by Aisling on 24/06/2012
This app is great in many ways. The tests contain a balanced mix of questions, from simple to challenging. However, once you've reached 40% of the total, a msg appears to tell you that you've passed. This msg covers the end of the questions, slowing you d