Open-source licenses

Grava uses a split license so the mobile app can be distributed through app stores without extending a server copyleft license into the app.

• The Grava app, the protocol package, and the original city-search code are licensed under the Mozilla Public License 2.0.
• The Grava Auth and Grava Node services are licensed under the GNU Affero General Public License v3.0 or later.
• The bundled city data is derived from GeoNames and licensed under Creative Commons Attribution 4.0. Grava keeps a subset of the fields and rounds city-center coordinates to two decimals.

Third-party software

Grava is built with open-source software including Expo, React Native, React, Better Auth, nostr-tools, and the noble and scure cryptography libraries. Each is used under its own permissive license, such as MIT.

Contact

Questions about licensing or source code: gian2automation@gmail.com.