Use
Carbon Footprint Quiz is provided free of charge for personal, non-commercial educational use. You may use it as much as you like — there are no subscription tiers and no in-app purchases.
Quiz content
All quiz questions, explanations and reference links are provided for educational purposes. While every effort has been made to cite primary sources accurately, the app is not a substitute for peer-reviewed scientific work. For decisions of consequence, consult the cited primary sources directly.
Sources & attribution
Carbon Footprint Quiz cites the IPCC, NASA, IEA, FAO, Our World in Data, GHG Protocol (WRI/WBCSD), US EPA, European Environment Agency and the Lancet Countdown, among others. All citations are visible on the answer screen of each question and link to the original publications.
Warranty
The app is provided "as is" without any warranty. Carbon Footprint Quiz and its maintainers are not liable for any decisions made based on the app's content.
Changes
These terms may be updated from time to time. Material changes will be announced via the App Store changelog.