Verify a hadith
Check authenticity against 61 collections with full narrator chain analysis
Theo
Meet Theo.
Your AI Islamic scholar — grounded in evidence, transparent in reasoning, respectful of tradition.
Capabilities
What can Theo do?
Six core capabilities — each grounded in primary sources, every answer citable.
Explore a Quran verse
See the Arabic, understand the context, explore related narrations
Compare madhahib
See how the four schools approach a question, with primary evidence for each
Research fiqh rulings
Evidence-based analysis of jurisprudence with confidence levels
Learn Islamic history
Explore events, scholars, and intellectual movements with source citations
Check Islamic finance
Shariah compliance questions answered with scholarly evidence
Methodology
The Tahqiq Method
How Theo reasons through your question — transparent at every step.
Search primary sources
Theo queries 668,000+ verified documents — Qurʾān, ḥadīth corpora, rijal databases, and classical scholarship.
Apply 12 cognitive operations
AXIOM™ decomposes your question, weighs evidence chains, resolves contradictions, and calibrates confidence.
Verify citations against corpus
Chain of Verification (CoVe) cross-checks every citation before it reaches you. Nothing is fabricated.
Personalization
Your learning journey
Theo adapts to how you learn. Set your preferences, and every answer meets you where you are.
Preferences that matter
Set your madhab affiliation, knowledge level, areas of interest, and response style. Theo adjusts depth, terminology, and Arabic usage accordingly.
Madhab preferenceKnowledge levelInterestsMemories
Four knowledge levels
From first-time learners to advanced students of knowledge — Theo scales its responses to match your understanding.
Beginner
Intermediate
Advanced
Scholar
Tell Theo to "remember that I follow the Hanafi school" or "I'm studying hadith science." Theo stores your context and personalizes every future response.
Pricing
Choose your path
Free
Explore at your own pace
$0
- 5 questions per day
- Full source citations
- Basic personalization
Plus
For regular learners
$9 /mo
- Unlimited questions
- Evidence maps
- Memory & preferences
- Priority responses
Tahqiq
Deep research mode
$29 /mo
- Deep multi-step reasoning
- Full verification (CoVe)
- Advanced research tools
- Everything in Plus
Sadaqah Jāriyah
Give the gift of knowledge
Know someone who can't afford access? Gift them Theo. Every question they ask becomes your ongoing charity — knowledge that keeps giving.
Frequently asked questions
Straight answers about what Theo is — and is not.
Is Theo a mufti?
No. Theo produces Evidence-Based Opinions (EBOs), not fatwas. Theo is a research assistant that retrieves, reasons, and cites — it does not replace a qualified muftī or imām. Always consult living scholarship for binding guidance.
What sources does Theo use?
Theo reasons from 668,000+ documents including the Qurʾān, Kutub al-Sittah, rijal works, ʿilal collections, and curated classical scholarship. Citations in each answer show exactly which sources were used.
Does Theo follow a specific madhab?
No. Theo presents evidence from all major Sunni schools of thought. You can set a preferred madhab in your profile, and Theo will lead with that school's position while still showing evidence from others.
Is my data private?
Your conversations are stored to power features like memory and personalization. They are never used for AI training. See our privacy policy for full details on data handling and retention.
Can I use Theo in Arabic?
Yes. Theo supports a full Arabic interface with native RTL layout. All primary source texts are available in the original Arabic. Switch languages anytime from your profile.
How accurate is Theo?
Every claim Theo makes cites a source. Confidence levels are shown for each response. Chain of Verification (CoVe) cross-checks citations against the source corpus to catch errors.
What's the difference between Free, Plus, and Tahqiq?
Free: 5 questions per day for exploration. Plus ($9/mo): unlimited questions with evidence maps. Tahqiq ($29/mo): deep multi-step reasoning with full verification and advanced research tools.
بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيمِ
Ask your first question.
Open Theo, ask once, and follow the trail from sources to synthesis.