Licenses
WONDER aggregates facts from open corpora. We believe in paying it forward: every fact carries a source link, and the underlying content is licensed under Creative Commons or dedicated to the public domain.
Wikipedia — Did You Know
A large share of WONDER's facts derive from Wikipedia's Did You Know section. Wikipedia content is licensed under the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0).
- • Attribution: shown on every fact as a source link
- • ShareAlike: derivative collections are distributed under the same license
- • No commercial restriction on CC BY-SA content itself
Science Facts Archive
Compiled science trivia, sourced to public references. Where a fact originates from a specific publication or article, the source link on the fact page points to it.
Curated Feeds
Facts hand-curated by the WONDER team from open sources. Original editorial content is © WONDER and distributed under CC BY-SA 4.0 as well.
How attribution works in the app
- → Every fact card shows a "Source" link
- → Tap it to open the original article or page
- → Exported Anki decks include the source URL in the card's back field
- → Bulk content reuse is allowed under CC BY-SA — just keep attribution
Questions about licensing? hello@wonder.app