Use the SAWI learning tool anytime and anyplace. Your just need to load a set of questions on your device and then use it offline.
You can learn on various subjects. Select the theme you prefer from a list and you will be presented 20 randomly selected questions.
Once you have worked your way through the 20 questions, an evaluation of your results will be presented. The result will also be saved in a personal statistic in order to track your learning progress.