Acknowledgements
Last updated September 9, 2026
Concord is built on public information and open-source software. We are grateful to the projects and institutions below, and we use each in accordance with its terms. Where a source requires attribution, it is also shown next to the relevant content in the app.
Government and public-domain data
- U.S. Congress: legislator roster via the unitedstates/congress-legislators project (public domain).
- Congress.gov API: legislative and bill data (U.S. Government work, public domain).
- U.S. Census Bureau Geocoder: congressional district lookup (public domain).
- vote.gov, usa.gov, and house.gov: official voter and representative resources.
Photography
Legislator portraits, where shown, come from public-domain congressional sources (the unitedstates/images project) or from Wikimedia Commons. Wikimedia images are used under their individual licenses, with author and license credited on the candidate’s page.
Typefaces
Concord uses DM Sans and DM Serif Display, open-source typefaces available through Google Fonts and licensed under the SIL Open Font License 1.1.
Open-source software
Concord is built with React Native, Expo, React, and other open-source components, used under their respective licenses (primarily the MIT License). Full license texts for all bundled components are available on request and in the project’s source distribution.
A note on sources
Inclusion of a source does not imply that source endorses Concord. Government data is used for civic information only and does not represent the views of any agency.
Contact
Questions about sources or licensing? Contact Side Yard Studio LLC at contact@sideyardstudio.co.