The Why

MARS Designs

In-app purchases

About this app

The Why is a Christian apologetics and theology training app built for people who want to defend their faith in real conversations — not just know what they believe, but be able to say it under pressure.

DEBATE
Pick a topic. Pick an opponent. Defend your faith.

The AI argues its position — seriously, with the actual arguments people use — while you respond turn by turn. After every debate, you get a full debrief: what you handled well, the arguments you missed, any fallacies used against you, the hardest pressure points, and recommended resources to go deeper.

Topics span the full range of conversations Christians actually face:

Apologetics — The Cosmological Argument, The Resurrection, The Problem of Evil, The Existence of God, Reliability of Scripture, Exclusive Claims of Christ, The Design Argument, The Moral Argument

Theology — Divine Sovereignty and Free Will, The Atonement, Baptism, The Lord's Supper, End Times, Hell and Final Judgment, Women in Ministry, Church and State, Sexual Ethics, Creation and Evolution

Catholic-Protestant — Sola Scriptura, Mary's Sinlessness, The Biblical Canon

VOICES
30 distinct opponents — each with its own theology, arguments, and pressure style:

Hostile Atheist, Analytic Atheist, Respectful Agnostic, Secular Humanist, Deconstructed Christian, Muslim Scholar, Muslim Philosopher, Orthodox Rabbi, Hindu Philosopher, Hindu (Bhakti), Buddhist Practitioner, Jehovah's Witness, Latter-day Saint, Black Hebrew Israelite, Progressive Christian, Catholic Apologist, Eastern Orthodox Theologian, Reformed Calvinist, Confessional Lutheran, Baptist (Credobaptist), Classical Arminian, Provisionist, Amillennialist, Postmillennialist, Historic Premillennialist, Dispensationalist, Egalitarian, Complementarian, Christian Nationalist, Secular Progressive

TRAINING
Structured, multiple-choice practice sessions on every topic. The AI gives feedback after every turn. Lower pressure than a live debate — better for building a foundation before going head to head.

DRILLS
Quick 1-minute practice across four drill types:
• Fallacy Identification — spot the bad argument
• Tactics — choose the sharpest response to a real objection
• Worldview — identify which worldview a statement comes from
• 30-Second Answer — give the best brief answer under pressure

80 drill questions across all four types.

GOSPEL MODE
Practice sharing the gospel one-on-one. Choose a character — skeptic, nominal Christian, university student, family member — and work through a conversation while the AI responds in character.

ANALYZE AN ARGUMENT
Paste any argument from a book, article, or conversation and get a full breakdown: claim identified, logical structure mapped, fallacies flagged, strongest counterarguments, and a recommended response strategy.

CHALLENGES
Send a debate challenge to a friend by email. They get your opening argument and respond in their own time. Good for accountability partners, small groups, and anyone who wants to practice without scheduling a live session.

GROUPS
Leaders can create study groups, set debate assignments, and track how members are engaging. Members see their assignments and can submit directly from the group.

GLOSSARY
A searchable reference of theological and philosophical terms, filterable by category: Theology, Philosophy, Apologetics, History, Logic.

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The Why is built on the conviction that you don't need to win arguments — you need to be prepared to have them. The pressure of a hard question shouldn't catch you off guard. This app puts you in that pressure, repeatedly, until it doesn't.

Free to start. Pro unlocks all drill types, Training, Analyze, Challenges, and PDF debrief exports.

What’s new

> Eight color schemes, dark and light — plus custom accent and debate colors for Pro.
> You get the last word: debates now end with your closing argument, unanswered.
> Debriefs and placement now end with what to learn next, and lead with what you already knew.
> Pick the display name your class sees.
> Polls in the class feed.
> Anything your leader assigns is unlocked for class members.
> Pause a debate without ending it.
> Fixed: the AI mentioning its own turn number.