What this app does:
-It teaches you grammar and vocabulary in a natural way, in sentences.
-It serves as a memory tool to make vocabulary and grammar an automatic response of your brain.
-It will take away the worry of 'what to learn next'. Just read the next exercise, understand the bit of grammar explained, learn the new word.
-The app is designed to be used as a training tool. The most important part is not learning new words or grammar (this is what manuals do), but consolidating the ones you already learned.

How to use:
You should try to practice at least 30 min every day, but not more than 1h. It does not have to be continuous time.
Let us suppose you have read and listened to the sentences up to 15. You will want to repeat these sentences before moving on. Go to sentence 1, by using the top bar. Start audio mode (it will ask you for the pause between sentences, in seconds). Listen to the english sentences and try to translate them to german. If you are not satisfied, repeat the process. Only move to new sentences when you are comfortable with your response up to that point.
If you don't want the sentences to come in order, just use the random icon to set limits from which the sentences to be repeated will be chosen randomly (in our case lower limit 1, higher limit 15)
Try to keep a low ratio between new information and number of repeats. For example if you advance 5 sentences, make sure that you repeat at least 3 times that many.
Frequency of use: try to practice as often as possible but do not try to move too fast forward. This is very important. If you can't effortlessly translate the sentences up to the point where you are, you MUST repeat. If you finish the course (over 3100 sentences, so realistically it will take you at least 16 months at a rate of 5 new sentences every day), if you did it without rushing it, you will know at least 2000 words, which is over 95 percent of the vocabulary used every day. From there on, you are on your own, but you will have gained a solid base for improving later.