Lumen Dei

Lumen Dei is your AI-powered Catholic companion — bringing daily Mass readings, guided prayer, and trustworthy answers about the faith into one beautiful, reverent app.

Walk in the light of faith, every day.

— WHAT YOU'LL FIND —
• Daily Mass Readings
Follow along with today's readings from the USCCB lectionary. Never miss the Word of God.

• AI Companion
Ask any question about the Catholic faith and receive thoughtful answers grounded in Scripture, the Catechism, and the Magisterium.

• Prayer & Rosary
Pray the Holy Rosary, Liturgy of the Hours, Divine Mercy Chaplet, and Lectio Divina with beautiful, guided experiences.

• Saint of the Day
Meet the saints and be inspired by their witness.

• Verse of the Day & Scripture Library
Carry sacred wisdom with you wherever you go.

• Parish & Mass Times
Find Catholic parishes and Mass times near you.

• Family Faith Hub
Activities, prayers, and conversations to nurture faith at home.

The app adapts to the liturgical season — Advent, Christmas, Lent, Easter, Ordinary Time — so your experience reflects the rhythm of the Church year.

— FREE & PREMIUM —
Lumen Dei is free to use. The free plan includes daily readings, Saint of the Day, morning & night prayer, a daily rosary session, parish finder, and AI chat.

Upgrade to Premium to unlock unlimited AI chat, all rosary mysteries, full Liturgy of the Hours, Lectio Divina, Confession preparation, a prayer journal, saints commentary, the Family Faith Hub, and the Divine Mercy Chaplet.

Premium is available as a monthly or annual subscription. Payment is charged to your Google Play account. Subscriptions renew automatically unless canceled at least 24 hours before the end of the period; manage or cancel anytime in Google Play settings.

Sacred wisdom. Modern guidance.

Lumen Dei is an independent app and is not officially affiliated with the Catholic Church or the USCCB.