Learn the
Sacred Language
Lingua Sacra teaches Ecclesiastical Latin through beautiful flashcards, classic prayers, adaptive quizzes, and spaced repetition — all completely offline, with optional cloud sync and community features.
Disce Latinam · Ad maiorem Dei gloriam
Three steps to reading Latin
Take the Placement Test
Already know some Latin? Skip ahead. Brand new? Start from the very beginning. Either way, you’ll land at the right level.
Learn with 20+ Practice Tools
Flashcards with audio, handwriting practice, cloze cards, paradigm drills, sentence building, adaptive quizzes, and reading comprehension passages.
Review & Remember
Spaced repetition surfaces words right when you’re about to forget. Quiz yourself and watch your vocabulary grow.
Everything you need to learn Latin
Structured Lessons
143 lessons across 14 tiers take you from absolute beginner to seminary-level Latin. Over 1,390 vocabulary words drawn from Scripture, the Mass, the Church Fathers, and the great prayers. Each lesson uses a 3-round mastery system — Learn, Practice, Master — so every word moves from recognition to true fluency. Adaptive difficulty targets your weak areas automatically.
Premium Gemini TTS Audio
7,200+ pre-recorded audio files with authentic Ecclesiastical pronunciation. Every vocabulary word, prayer, rosary mystery, litany invocation, and saint’s name has professional-quality audio — the living pronunciation used in the Vatican and in Catholic worship worldwide.
20+ Practice Tools
Adaptive quizzes, cloze deletion cards, minimal pair drills, paradigm table fill-ins, sentence building, handwriting practice, writing prompts, fluency drills, reading comprehension, and more. An adaptive engine targets your weak declensions and conjugations automatically.
Prayer & Liturgical Library
25 complete prayers with word-by-word annotations. Pray the full Rosary in Latin with all 20 mysteries. Walk through the Litany of the Saints and Litany of Loreto. A daily prayer companion follows the liturgical calendar. Plus a chant guide, Mass companion, Lectio Divina, and reading plans.
Vulgate Bible Reader
Read selected books of the Latin Vulgate, including Psalms and Canticles. Tap any word to see its meaning, part of speech, grammatical form, and root. Words are color-coded by part of speech — nouns, verbs, adjectives, prepositions — making grammar visible at a glance. Bookmark favorite verses and track your reading progress.
Track Your Progress
Watch your vocabulary grow with detailed progress tracking. See your streak, review accuracy, mastery levels, weekly reports, and a study heatmap. Earn 45 achievement badges. Compete on weekly leaderboards. Create and share custom vocabulary lists with your parish or seminary cohort.
Community & Competitions
Create a free account to sync across devices. Join parish study groups or seminary cohorts with shared leaderboards. Challenge friends to 1v1 Latin duels. Take on daily challenges tied to the liturgical calendar. Climb weekly leaderboards. Every online feature is optional — the app works fully offline without an account.
Beautiful, immersive design
Built with love for the Catholic tradition
Latin before & after Lingua Sacra
Drag the slider to see how the app transforms unfamiliar Latin into something you can understand
← drag to reveal →
Experience a real flashcard
Tap the card to reveal the translation. This is exactly how learning feels inside Lingua Sacra — beautiful, focused, and immersive.
Each card includes the Latin word, its pronunciation, English meaning, an example sentence, and grammar notes. The spaced repetition system tracks what you know and surfaces words at the perfect moment.
How we compare to other options
| Feature | Lingua Sacra | Latin Textbooks | Duolingo Latin |
|---|---|---|---|
| Ecclesiastical pronunciation | ✓ Yes | ✗ Classical only | ✗ Classical only |
| Audio for every word | ✓ 5,378 recordings | ✗ None | ● Some |
| Prayer library with grammar | ✓ 25 prayers + Rosary + Litanies | ✗ No | ✗ No |
| Bible reader (Vulgate) | ✓ Psalms & Canticles, tap-to-parse | ✗ No | ✗ No |
| Handwriting practice | ✓ Trace & learn | ✗ No | ✗ No |
| Adaptive AI difficulty | ✓ Targets weak areas | ✗ No | ● Basic |
| Paradigm drills | ✓ All 5 declensions | ● Manual | ✗ No |
| Spaced repetition (SRS) | ✓ Built-in | ✗ Manual | ● Basic |
| Works fully offline | ✓ Yes (online optional) | ✓ Yes | ✗ No |
| Cloud sync & backup | ✓ Free account | ✗ No | ✓ Yes |
| Study groups & leaderboards | ✓ Parishes, classes | ✗ No | ● Basic |
| Catholic liturgical focus | ✓ Mass, Vulgate, hymns | ● Varies | ✗ Secular |
| No subscription required | ✓ One-time, free tier | ✓ One-time | ✗ $84/year |
| Curriculum depth | ✓ 10 tiers to seminary level | ● Varies | ✗ Basic only |
| Placement test | ✓ Skip ahead | ✗ No | ● Basic |
From first words to seminary Latin
14 tiers, 143 lessons. A complete path through the sacred language.
First Steps
8 lessonsCore prayers, basic vocabulary, and your first Latin sentences. Pater Noster, Ave Maria, essential greetings.
Foundations
10 lessonsThe Mass ordinary, basic grammar, first and second declension nouns. Begin reading simple Scripture passages.
Grammar & Scripture
12 lessonsThird declension, verb conjugations, adjective agreement. Read John 1:1–5 and the Magnificat in the original Latin.
Intermediate Latin
12 lessonsSubjunctive mood, relative clauses, passive voice. Tackle the Te Deum, psalms, and longer Vulgate passages.
Advanced Grammar
10 lessonsDeponent verbs, ablative absolute, complex sentence structure. Read the Benedictus and extended Gospel passages.
Vulgate Mastery
10 lessonsExtended Vulgate reading. Genesis, Exodus, Psalms, and prophetic texts. Build fluency with sustained Latin prose.
Complex Constructions
13 lessonsConditional sentences, gerunds & gerundives, fear clauses, indirect questions. Read Philippians and Romans in the original.
Reading the Tradition
13 lessonsExtended readings from Augustine’s Confessions, Aquinas’s Summa, Isaiah, Wisdom, and Jerome. Medieval Latin vocabulary.
Ecclesiastical Latin
11 lessonsThe Ordinary of the Mass, liturgical calendar, conciliar and papal Latin, the Divine Office, canon law, and theological vocabulary.
Seminary Capstone
8 lessonsThe Armor of God, the Order of the Mass, and the last words of Christ. The capstone of the core path — the sacred language of the Church is now yours.
Patristic Voices
9 lessonsDrink from the patristic springs — Augustine, Jerome, Ambrose, Gregory the Great, Leo, Cyprian, Tertullian, and the Desert Fathers.
Councils & Canon Law
9 lessonsThe Latin of the councils and the canons — Nicaea, Trent, Vatican I and II, papal encyclicals, and the living legal language of the Church.
Scholastic Philosophy
9 lessonsScholastic rigor: Aquinas, Boethius, Scotus and Ockham. The Summa’s structure, the cardinal virtues, metaphysics, and natural theology.
Latin Composition
9 lessonsCompose what you have learned to read — hymns, prose, sermons, and letters. Disputation, poetry, and the grand capstone: Lingua Sacra Doctus.
Latin you’ll hear at Mass
The essential responses and prayers every Catholic can learn
Built on proven learning science
Every feature is designed to move Latin from short-term memory into lasting knowledge
Spaced Repetition (SM-2)
Words reappear at scientifically optimal intervals. The algorithm adapts to your confidence — words you know well space out, words you’re unsure of come back sooner.
Three-Round Mastery
Every lesson progresses through three rounds: Learn (recognition), Practice (production), and Master (composition). You don’t move on until you truly know the material.
Fluency Drills
60-second timed rapid-fire sessions build speed and automaticity. Track your words-per-minute and watch your reaction time improve over weeks of practice.
Grammar-Aware Feedback
When you make a mistake, you don’t just see the right answer — you get a targeted grammar note explaining why, helping you understand the underlying pattern.
Adaptive Mastery Checks
Periodic mastery checks use weighted sampling — words you struggle with appear more often. Results feed back into spaced repetition for continuous improvement.
20+ Question Types
Multiple choice, listening comprehension, type-in, sentence parsing, cloze deletion, matching, and more. Variety keeps practice engaging and tests different aspects of knowledge.
Handwriting Practice
Trace Latin words on screen to build motor memory — one of the strongest encoding paths for language retention. Visual feedback shows your accuracy in real time.
Paradigm Drills
Interactive declension and conjugation tables where you fill in the endings. Master all 5 declensions and 4 conjugations with instant feedback on every cell.
Minimal Pair Discrimination
“Is this dominus or dominum?” Trains your ear and eye to distinguish similar Latin forms — the #1 struggle for beginning students.
Reading Comprehension
22 graded passages from Scripture and the Church Fathers with comprehension questions. Read real Latin texts and demonstrate understanding — the bridge from vocabulary to fluency.
AI Adaptive Difficulty
An intelligent engine analyzes your error patterns across 15 grammar categories and auto-generates remedial quizzes targeting your weakest areas. Difficulty scales dynamically as you improve.
Tap a card to learn your first words
Each card has audio, pronunciation, grammar, and an example from Scripture or the liturgy.
The Lord be with you
Full of grace
Peace of the Lord be with you always
Pray as the Church has prayed for centuries
Dominus tecum.
Benedicta tu in mulieribus,
et benedictus fructus ventris tui, Iesus.
Sancta Maria, Mater Dei,
ora pro nobis peccatoribus,
nunc, et in hora mortis nostrae.
Amen.
Holy Mary, Mother of God, pray for us sinners, now and at the hour of our death. Amen.
A new Latin phrase every day
Lingua Sacra includes 364 daily phrases to deepen your practice
Prayer of the Week
How much Latin do you know?
5 quick questions to find your level
Frequently asked questions
Is this Classical or Ecclesiastical Latin?
Does the app work offline?
Do I need any prior Latin knowledge?
How is the pronunciation audio generated?
How much does the app cost?
What devices are supported?
How does spaced repetition work?
Help us improve Lingua Sacra
Your feedback shapes the future of the app. Whether it’s a feature request, a bug report, or just telling us what you love — we read every response.
Prefer email? Write to us directly at applinguasacra@gmail.com. We reply within 1–3 days.
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