Content, licences & languages
From a base of over 1.1M questions drawn from open datasets on free licences (CC-BY, CC-BY-SA, MIT), calibrated for difficulty and category.
Yes. The questions are on open licences and every kit includes a sources page with the required attribution. We do not sell exclusivity - we sell the curation, format and tools around them.
English and Polish, from the same builder. Switch the quiz language and the same builder maps the questions over.