Who we are
ChemApp is a French non-profit association ("association loi 1901"), registered under RNA number W491022669. We build and maintain a free, open-access platform for learning organic chemistry - reaction mechanisms, flashcards, and quizzes - available to anyone, anywhere, at no cost.
The association is represented by its Board: President Dr. Eliott ROY, Secretary Dr. Lilian ESTAQUE, and Treasurer Olivier ROY. You can read more about the people behind ChemApp on our Credits page.
Our mission
We believe scientific knowledge should never be limited by financial means. Too often, mastering organic chemistry depends on expensive textbooks, courses, or institutional access - a real barrier for students and self-learners worldwide.
ChemApp exists to remove that barrier: a free, fully accessible chemistry lab where anyone - a student preparing for an exam, an educator looking for teaching material, or simply someone curious about chemistry - can explore, learn, and master organic reactions at their own pace.
Our programs
Reactions - A library of 131 organic reactions, each with a detailed mechanism.
Flashcards - 242 cards organized into 16 thematic sets, with progress tracking and the option to build a personal set.
Quiz - 257 questions across four difficulty modes, from Beginner to God Mode Meltdown, with a public leaderboard.
Printable PDFs - Learning continues away from the screen: reactions, flashcards, and quizzes can all be downloaded as clean, printable PDFs. Any reaction can be exported on its own, favorite reactions can be printed together to build a personal revision portfolio, and flashcards come with their answer key. For teachers and study groups, each quiz category can generate a random multiple-choice worksheet with an answer key.
All programs are free, with no account ever created and no tracking cookies - and our educational content is published under a Creative Commons license. See our Legal Notice page for details.
Next steps - Port the ChemApp website to apps, so that everything available on the platform can also be used from a dedicated app, and keep developing new features based on user requests and feedback.
Our history
ChemApp was founded by Eliott Roy, Lilian Estaque, and Olivier Roy, who saw during their academic and professional journeys how the cost of education can become a barrier to learning science.
Early 2026 - Development of the ChemApp platform begins.
April 2026 - The Reactions section is built, with detailed mechanisms illustrated through custom SVG diagrams.
July 2026 - Custom flashcard sets become available.
August 2026 - The Quiz section and its leaderboard are added, and the platform is tested by a group of early reviewers.
September 24, 2026 - ChemApp is officially founded as a French non-profit association ("association loi 1901").
October 2026 - ChemApp officially opens to all visitors.
Our impact
Since October 2026, the platform has offered 131 reactions, 242 flashcards, and 257 quiz questions, all free of charge, with no account and no paywall.
Our ambition is international: the platform is published in English, so that students and educators in any country can use it, whatever their background or financial situation. It removes the cost of access to learning materials, one of the barriers that can keep students away from organic chemistry.
How we're funded
ChemApp is entirely volunteer-run and funded by voluntary donations from our community - no donation is ever required to use the platform. See our Support Us page for details on how donations are used and how to contribute.
Get in touch
Questions, feedback, or ideas for the platform? Reach us through our Contact page.
Our registered office is at 12 rue du Grand Pré, 49124 Saint Barthélemy d'Anjou, France.