Iter Fidei

The inheritance

Twenty centuries of prayer, in your hand.

The rite the saints prayed, handed down unbroken since antiquity. Iter Fidei gathers it whole — the Mass, the Divine Office, Confession, the devotions — faithful to 1962, rigorously sourced, and carried with you everywhere. The treasure of the Church, intact, within reach.

The whole rite

The Mass, the Divine Office, Confession and the great devotions. Nothing is missing, nothing is added.

Faithful to 1962

The Roman Rite in its last received form, verified and sourced down to the smallest prayer.

Wherever you are

The nearest Traditional Latin Mass to you, among thousands of locations across the world.

In your language

Latin beside a careful translation, natively in eight languages.

What you carry with you

The whole rite, in a single app.

Iter Fidei is the first complete digital companion built solely for the Traditional Latin Rite — rigorously sourced, liturgically exact. We closed every gap in the sources that came before. What you hold goes further than anything that existed before it.

The Mass of the Day

Every feast's full propers, from Introit to Communion, Latin beside a careful translation — with a daily reflection drawn from Dom Guéranger and Butler. Every day of the year.

The Divine Office

All eight canonical hours, Matins through Compline, Prime included — complete, correctly assembled, with antiphons and lessons. The Breviary, unchanged.

A Latin Mass near you

Find the nearest Traditional Latin Mass among thousands of locations worldwide — 1962 rite only. Times, places and directions.

Prayer, with you

The Rosary, the Angelus and the great devotions — with synchronised audio to pray along, word for word, wherever you are.

The Library

The Vulgate, the Catechism of Saint Pius X, the Council of Trent, the Spiritual Combat, Tanquerey — and original Iter Fidei works, like the Vade-mecum of Traditional Faith.

The 1962 Calendar

Feasts, fasts, liturgical seasons, ember days, classes I to IV — the complete calendar, accurate for every year.

II
Mill.

Years of tradition

Canonical hours, complete

2,800+

Latin Masses located

Languages, natively

The discipline

Pray before you open your phone.

The screen swallows our days, and prayer is always put off until tomorrow. Iter Fidei reverses the order: at the hours you choose, your phone locks and brings you back to prayer — the true prayer, in its form for the day — before anything else.

Your prayers

The Angelus, the Rosary, lectio divina, the hours of the Office — the ones that matter to you.

Your hours

On waking, at noon, in the evening, before night — you set the moments, as many as you wish.

The proper form of the day

The prayer set before you is never static: it is the Angelus, Office or meditation of the actual day.

6:00 PM

The Angelus

Recite to unlock

Confession

From the examination to the confessional.

Iter Fidei walks with you through every step of the sacrament — examine your conscience, name and number your sins, know the state of your soul, then be guided, word for word, before the priest. No other app goes this far.

The examination of conscience

Across the ten commandments, the five precepts of the Church, the seven capital sins and the duties of one's state — each sin marked mortal or venial, sourced in doctrine.

The notebook

Note and number each sin; a private draft that clears once the confession is made.

The state of your soul

Days since your last confession, mortal and venial sins, your recurring areas of weakness.

The guide, before the priest

Walked through step by step — from the act of contrition to the accusation — in the Tridentine form.

Prepare my confession

State of the soul

Mortal

Venial

312

Days