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Horatio

Preserve and read texts in rare, endangered, and classical languages. Fully offline, no account required.

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19
Calendar Systems
12
Writing Scripts
34
Content Packs
100%
Offline

Key Features

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Rare Language Texts

Liturgical and classical texts in languages with declining or halted editorial production. Digital preservation for future generations.

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19 Liturgical Calendars

Roman Rite with 15 national variants (Italy, USA, Germany, France, Spain, Portugal, Brazil, and more), plus Ambrosian, Mozarabic (Toledo), and Coptic Catholic rites.

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Bible Translations

Vulgata Clementina (Latin), Martini 1781, and Diodati 1607. Browse by Testament, Category, Book, and Chapter.

Multi-Script Support

Latin, Arabic, Hebrew, Syriac, Coptic, Ge'ez, Greek, Gothic, Armenian, Devanagari, and more.

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Full-Text Search

Search across all installed texts with instant results. Find any passage, verse, or prayer.

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Content Packs

Modular installation — download only the languages and texts you need. Lightweight and efficient.

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Dark Theme

Designed for contemplative reading. Easy on the eyes, day or night.

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Private & Offline

No account, no tracking, no ads. All content processed and stored locally on your device.

Liturgy of the Hours

Daily office assembler for Lauds, Vespers, and Compline. Navigate by date, browse the assembled liturgy with proper BMD formatting.

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Source Quality Badges

Each content pack displays its source quality: original text, machine translation, or scholarly edition. Know what you are reading.

Supported Scripts

Read texts in their original writing systems with bundled Noto Sans fonts.

Latin Arabic Hebrew Syriac Coptic Ge'ez Greek Gothic Armenian Georgian (Mkhedruli) Devanagari Cyrillic

Text Languages

Latin, Italian, Georgian, Maltese, Arabic, Coptic, Syriac, Hebrew, Ancient Greek, Japanese, Korean, Chinese, Romanian, Russian, Afrikaans, and more.

Available Packs

Install only the languages and texts you need. All packs are free and work completely offline.

KA

Georgian Breviary

Liturgy of the Hours in Georgian script

CO

Coptic Mark

Gospel of Mark in Coptic

SY

Syriac Peshitta

Peshitta liturgical corpus

HE

Hebrew Tanakh

Torah and Prophets selections

AR

Arabic Readings

Arabic liturgical readings

EL

Greek Classical

Classical and Biblical Greek texts

MT

Maltese Prayers

Traditional Maltese prayers

LA

Vulgate Psalter

Latin Psalms from the Vulgate

LA

Vulgata Clementina

Complete Latin Bible

IT

Martini 1781

Catholic Italian Bible (1781)

IT

Diodati 1607

Protestant Italian Bible (1607)

12

Bible Translations

KJV, BBE, Reina-Valera, Schlachter, APEE, Almeida, Smith & Van Dyke, Synodal, Cornilescu, CUV, Korean, Greek

13

Lectionaries

Daily Mass readings in 13 languages: Latin, English (KJV & BBE), Spanish, French, Portuguese, German, Arabic, Korean, Chinese, Russian, Greek, Romanian

LA

Breviarium Romanum

Latin Roman Breviary — Liturgy of the Hours (Breviarium Romanum 1960)

LA

Common Prayers (Latin)

Traditional Catholic prayers in Latin: Pater Noster, Ave Maria, Rosary, and more.

IT

Common Prayers (Italian)

Traditional Catholic prayers in Italian: Padre Nostro, Ave Maria, Rosario, and more.

More language packs coming soon

Browse All Packs →

Browse and install packs from the Pack Manager inside the app. Create your own pack →

Development Roadmap

Horatio is in active development. Some features are complete, others are work in progress.

Continuous reader

Scroll through texts with BMD liturgical formatting, flexa/dagger psalm notation, RTL support.

41 content packs

Bibles in 12 languages, lectionaries in 13, breviaries, common prayers, rare language samples.

19 liturgical calendars

Roman Rite engine with 15 national variants, Ambrosian, Mozarabic (Toledo), and Coptic Catholic rites.

Pack Manager

Install, remove, and download content packs. On-demand delivery via Play Asset Delivery.

Georgian translation

Latin Breviary translated to Georgian with TranslateGemma. Georgian fully functional with Latin fallback for missing translations.

Source quality badges

Pack metadata displays source quality indicators: original text vs machine translation, with language and source attribution.

Liturgy of the Hours

HoursAssembler, Navigator, and Reader infrastructure built. Assembles daily office (Lauds, Vespers, Compline) from breviary packs.

Full localization

UI in 22 languages. BMD section labels translated in 12 languages. Calendar i18n in 22 locales including Georgian, Japanese, Korean, Chinese, Arabic, Coptic, Greek, Hebrew, Syriac.

Text quality validation

Cross-referencing multiple sources to find and fix errors in liturgical texts.

Biennial lectionary cycle

Year I/II weekday readings for the Office of Readings. Content recovered, wiring in progress.

Bookmarks & notes

Save personal annotations on any text fragment. Highlight and share passages.

Audio recitation

TTS or recorded audio for psalm chanting and readings.

Coptic & Ge'ez full packs

Complete liturgical texts in endangered African Christian languages.

Done In progress Planned

Your Privacy

Horatio is completely offline. No data is collected, transmitted, or shared. No account required, no ads, no tracking.

Full Privacy Policy →