Fides - Catholic Faith

Now with Fides AI: ask any Catholic question, get cited answers.

Most Catholics can name the sacraments. Far fewer can explain why they exist, defend them in conversation, or trace them through Church history. Fides changes that.

Built for Catholics who want depth. Fides delivers daily lessons across seven pillars: Foundations of Faith, Apologetics, Church History, Scripture & Tradition, Science & Faith, Moral Theology, and the Lives of the Saints. Each lesson takes under five minutes. Each one teaches you something you can actually use.

LEARN LIKE YOUR FAITH DEPENDS ON IT • Daily bite-sized lessons with real theological depth • 7 pillars of Catholic knowledge, 22+ tracks • Saint of the Day with biographical context • Spaced repetition review - never forget what you've learned • XP, streaks, and leagues to keep you coming back

KNOW WHAT YOU BELIEVE AND WHY • Apologetics lessons grounded in CCC and Church Fathers • Science & Faith content that actually engages modern objections • Doctrine explained through history, not just definition

A SAINTS COLLECTION UNLIKE ANYTHING ELSE Unlock 60 saints as you progress. Each saint is a collectible card with their biography, feast day, patronage, and the theological truth their life embodies. Saints aren't decoration.

DESIGNED FOR SERIOUS LEARNERS Fides is not a rosary app. It's not a Bible verse of the day. It's a rigorous knowledge system for young Catholics, RCIA candidates, converts, and homeschool families who want to know their faith at a level that can survive a dinner table argument.

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/