About Settemila Lingue

Marius Olsthoorn

Founder & builder

I built Settemila Lingue to make serious language practice easier to start and easier to sustain, especially for languages that mainstream apps ignore.

My work spans product design, software engineering, grammar curation, and the editorial systems behind the public grammar guides and in-app practice decks.

The goal is simple: give learners trustworthy grammar structure, spaced repetition practice, and multilingual support without making them assemble their own study system first.