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’ rendering, layout, and interaction code is native Swift. Its vector catalog contains Gregorian glyph outlines converted from the maintained Exsurge fork. No Exsurge JavaScript, web view, or runtime font is included.
Copyright © 2008–2016 Fr. Matthew Spencer, OSJ. License: MIT. Maintained Exsurge source
EB Garamond
Hours distributes the EB Garamond variable font. Copyright © 2017 The EB Garamond Project Authors. License: SIL Open Font License 1.1.
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. Exact release-content source archives will accompany public distributions.
Questions
For licensing questions, email help@horarum.com.