The licence, in plain words
The code is under the GNU Affero General Public License, version 3 (AGPL-3.0-only). That means:
- You may run it for your venues, free, with nothing owed to anyone.
- You may read it, change it and build on it.
- If you offer it to other people as a hosted service, changed or not, you must publish your changes under the same licence. That one rule is what keeps hosting a choice rather than a trap: nobody, including us, can take the code private and sell it back to venues.
This is a plain-words summary, not the licence. The licence text is the LICENSE file in the repository.