About our grammar guides
Explore grammar concepts, explanations and examples in our free grammar guides.
Large concept trees built for coverage
Each language is organized into a large concept tree so learners can move through grammar from A1 to C2. The structure is designed to cover a wide range of concepts consistently across languages, even as individual trees continue to evolve.
Articles generated with AI assistance
Article drafts are generated with AI assistance so we can cover many languages consistently, but they are generated from our grammar structure rather than scraped from other sites.
Automated checks and review workflow
The guides combine AI-assisted drafts with automated checks and editorial review.
Structured by CEFR level
Concepts are organized from A1 to C2, so learners can move from the basics to advanced structures in a logical order.
Want to know who builds and maintains this system?
Meet the founder