Licenses — Hours

Hours distinguishes material distributed in the app from works consulted only as references. Acknowledgement does not imply endorsement.

Material distributed with Hours

Divinum Officium

Calendar and office-text data, including English translations. Source revision: 79a596eeb68268c35334f25122af7ffc376934d5.

License: MIT. Divinum Officium source

Exsurge glyph geometry

Hours engraves its chant with gabc-parser: in Swift on iPhone and iPad, in Kotlin on Android, and in TypeScript on the web. Its vector catalog contains Gregorian glyph outlines converted from the maintained Exsurge fork. No Exsurge JavaScript, web view, or runtime font is included.

gabc-parser

The parser and engraver of the chant on every platform. License: MIT. gabc-parser source

The web app’s libraries

The web app also carries SQLite and other open-source libraries. Each is listed with its license at liturgia.horarum.com/licenses.txt.

EB Garamond

Chant transcriptions

Each chant score records its collection, source identifier, source URL, license, and checksum.

GregoBase transcriptions are dedicated to the public domain under CC0 1.0.
Nocturnale Romanum transcriptions remain under GPL-3.0-only. Applicable source and notices will accompany the app release.

Development references and acknowledgements

Breviarium Gregorianum — assembly and order concordance and chant source-index reference.
Original Exsurge — offline visual-regression reference.
jgabc / Chant Tools — development generator and reference for reviewed tones.
The 1960 Liber antiphonarius, 1961 Liber Usualis, historical Roman breviaries and martyrologies, and modern printed editions — editorial references only.

Hours source

The Hours source code is available on GitHub. The source of each release is published there.

Questions

For licensing questions, email help@horarum.com.