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Learn IARC carcinogen hazard groups with an offline educational quiz.
Understanding Carcinogens is a free, offline educational app designed to help you learn how agents are classified into carcinogenic hazard groups. What you can do Quiz mode: test your knowledge of hazard group classifications. Study mode: browse and filter the list of agents. Works offline (external links require Internet). Important clarification (hazard vs risk) This app reflects hazard identification (whether an agent can cause cancer under certain conditions), not individual risk. Risk depends on dose, duration, and route of exposure. A classification does not automatically mean high risk in everyday life. Language and translations The English agent name is the binding reference. Translations are provided for educational purposes and may contain errors. Machine translation was produced with Argos Translate. External links (Wikipedia) After answering, you can open optional links to Wikipedia for background information. Wikipedia is a third-party resource; content may be incomplete or inaccurate. The app is not affiliated with or endorsed by the Wikimedia Foundation. Disclaimer This app is created for educational and divulgative purposes only and does not provide medical, clinical, regulatory, or legal advice. The classifications are provided “as published” and “as is”. Neither the developer nor IARC/WHO is responsible for decisions made based on this app. Data source and attribution The app uses agent names and classifications from IARC Monographs Volumes 1–140 (data updated up to 21 November 2025). Credit line (as required): “© International Agency for Research on Cancer, 2025, Agents Classified by the IARC Monographs, Volumes 1–140, available at: [https://monographs.iarc.who.int/agents-classified-by-the-iarc/] , accessed on 21 November 2025.” IARC/WHO does not endorse this app.