Downloading Grammatisch 2.17.21 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The software is categorized as Education Tools. This free Mac app is a product of Grammatisch.
From the developer:
Grammatisch has thousands of exercises as well as summaries, tables and lists for the key topics of the German grammar. You don’t need to take leveling tests, just pick any topic and start learning it. You can solve dozens of exercises in a row to memorize concepts and grammar rules in a short time. When you finish an exercises session, you can check your score and a detailed correction of your answers.
You may want to check out more software for Mac, such as Keep Your Word, AceReader Pro or Master Spell, which might be similar to Grammatisch.