Learn anything, a little every day.

• Lessons on more than 1,600 questions, from "Why is a rocket almost entirely fuel?" to "Did colonial scholars invent Hinduism?", across science, history, economics, psychology, technology, art, philosophy and more.
• Paths: over 100 ready-made ones (how the internet works, the Cold War, understanding AI agents…), or one built for your own question, easiest step first.
• Every day: the news explained in plain words, with its sources, and small rituals: a picture, a question, a fact, tonight's moon.
• In English and French, free, with no ads.

• Each lesson is written from named sources (encyclopedias, papers, official documentation), with the help of AI.
• Every claim is tied to a quote copied word for word from its source, and a program checks that each quote really appears there before a lesson can be published.
• A second, independent review reads each lesson against its sources: claims that go further than the quote are cut or reworded, debates are attributed to the people who hold each view, and no verdict is given in our own voice where experts disagree.
• The sources are listed at the end of every lesson, so you can always read further and check.
• Lessons are re-checked over time, and corrected when a source changes.

If Lucioly doesn't cover something yet, ask for it from the Paths page: the most requested subjects are written first.

Questions, corrections or ideas: til.learns@gmail.com. How we handle data is on the privacy page.

Lucioly est une application d'apprentissage gratuite : n'importe quel sujet en courtes leçons de deux minutes (ou cinq), reliées en parcours depuis les bases. Chaque leçon est écrite à partir de sources nommées, avec l'aide de l'IA ; chaque affirmation est liée à une citation exacte de sa source, vérifiée par un programme, puis relue par une seconde vérification indépendante. Les sources sont listées à la fin de chaque leçon. En français et en anglais, sans publicité. Contact : til.learns@gmail.com.