Unfortunately, you can not give 2 1/2 stars, here it would settle for me. Initially still full of anticipation was a deeper look rather sobering. There are a handful of issues that recur fairly quickly and are similar in part to each topic. For example, a text to read for a question you do not want to click on the light bulb, there I find everything, just the text. To enter an answer, click on "valid" and in some matters is getting the proper response including "corrige". The meaning reveals itself to me not quite. 2 stars are very little, but unfortunately this 3 too much. I uninstall this app again, long-term motivation and learning motivation with me tend towards 0. Since at present nothing can but everyone even form an opinion. Have seen worse Apps.