Download of Doctus 0.8 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free Mac application is an intellectual property of Daniel Demski. The software is categorized as Education Tools.
From the developer:
Doctus is currently a verb-drilling system designed for students of Latin. Nouns and other parts of speech will be included soon, and the project's ambition is to include everything a student needs for learning Latin in one free OS-independent application.
You may want to check out more software for Mac, such as PianoRoll, eduMap or FRS Clocks and Time, which might be related to Doctus.