Cast64

What is Cast64?

Cast64 is the most comprehensive I Ching (Book of Changes) platform that bridges ancient Chinese wisdom with modern AI technology. Whether you're seeking guidance on career decisions, personal relationships, or life direction, Cast64 provides structured, thoughtful interpretations grounded in millennia of scholarly tradition.

Why Cast64?

The I Ching has guided thinkers from Confucius to Carl Jung, from Leibniz (who discovered binary's connection to hexagrams) to modern data scientists who see parallels with machine learning. Cast64 makes this profound system accessible to everyone—no expertise required.

🌟 Key Features:

1. Instant Three-Coins Divination

Traditional I Ching divination requires 15-20 minutes of careful coin tosses and manual calculation. Cast64's intelligent tool computes your primary hexagram (本卦), relating hexagram (之卦), and changing lines (动爻) instantly. Just input your six coin toss results.

2. Complete Hexagram Encyclopedia

All 64 hexagrams × 6 lines = 384 individual interpretations, fully structured and searchable:

- Original classical text (卦辞, 爻辞)

- The Ten Wings commentary by Confucius

- Image interpretations (象传)

- Historical context and modern applications

- Available in both English and Chinese

3. AI-Powered Personalized Interpretation

Unlike generic fortune-telling, Cast64's AI analyzes your specific question against:

- The structural meaning of your hexagram combination

- Thousands of years of scholarly commentary

- The dynamics of changing lines

- Modern contextual relevance
The result? A nuanced, multi-angle interpretation that reads like advice from a wise mentor who knows your situation.

4. Divination Square - Learn from the Community

Browse real divination cases shared by others:

- See what questions people ask and how hexagrams answer

- Learn I Ching interpretation through practical examples

- Discover patterns between similar hexagrams

- Build your understanding organically

5. Personal Divination History

Track your readings over time:

- Save all your consultations with timestamps

- Revisit past interpretations as situations evolve

- See how accuracy and insights develop

- Export your spiritual journal

6. Full Internationalization

Complete English and Chinese support throughout—making this ancient Chinese text accessible globally without losing nuance.

📚 Who is this for?

- Decision-makers seeking structured frameworks for complex choices

- Philosophy enthusiasts exploring Eastern wisdom traditions

- I Ching students who need a comprehensive reference tool

- AI/ML curious minds interested in ancient pattern recognition systems

- Anyone facing life's crossroads and seeking thoughtful reflection

🎓 Educational & Rational Approach

Cast64 treats I Ching as a sophisticated pattern recognition system, not superstition:

- Historical credibility: Confucius, Leibniz, Jung, and modern scholars have studied it deeply

- Systematic thinking: Like how SVM projects to high dimensions, I Ching uses abstraction to find patterns ancient people couldn't brute-force compute

- Psychological tool: Carl Jung used it for patient diagnosis and self-reflection

- Decision framework: Helps enumerate possibilities and examine situations from multiple angles

⚡ Technical Highlights

- Blazing fast: Static site generation with Astro for instant page loads

- SEO optimized: Every hexagram gets its own indexable page

- Privacy-focused: Local storage for history; login optional

- Mobile-friendly: Beautiful, responsive design for casting anywhere

- No ads: Clean, distraction-free interface

🆚 How is it different?

Most I Ching apps are either:

- ❌ Generic automated responses with no context

- ❌ Scammy "fortune telling" with paywalls for answers

- ❌ Academic references too complex for practical use

- ❌ Chinese-only with poor translations

Cast64 is:

- ✅ AI-powered with structured, ancient source material

- ✅ Respectful of the tradition while being accessible

- ✅ Free core features; AI interpretation with fair usage

- ✅ Scholarly accurate with beautiful UX

- ✅ Truly bilingual (not just translated)

🚀 Get Started in 30 Seconds

1. Visit Cast64.com

2. Toss three coins six times (or use Quick Random)

3. Input results: Heads = Yang (3), Tails = Yin (2)

4. Get your hexagram interpretation instantly

5. Optional: Add your question for AI deep-dive

🌏 Try it now: cast64.com

Hey Product Hunt! 👋

I'm thrilled to launch Cast64 today—a modern take on the 3,000-year-old I Ching (Book of Changes).

Why I built this:

A few years ago, I was facing a major career decision. A friend suggested consulting the I Ching, but the process was tedious: toss coins 18 times, look up arcane tables, read through dense classical Chinese texts, try to figure out what it meant for my situation.

I thought: "This system has guided emperors, philosophers, and psychologists for millennia. Confucius studied it intensely. Jung used it clinically. Leibniz saw binary code in it. Why is it still so inaccessible in 2025?"

So I built Cast64 to:

1. Eliminate friction: Calculate hexagrams instantly

2. Make it comprehensive: All 384 interpretations, properly structured

3. Add AI intelligence: Contextual readings for YOUR specific questions

4. Build community: Learn from how others use I Ching

5. Go global: Full English support, not just rough translations

What makes the AI special:

Unlike generic fortune-telling apps, Cast64's AI doesn't make stuff up. It's grounded in:

- The original Zhou Dynasty texts (周易)

- Confucius' Ten Wings commentary (十翼)

- 2,500+ years of scholarly interpretation

- Your specific question and context

Think of it as having a wise I Ching scholar who's read everything and can explain how it applies to your situation.

My favorite feature: Divination Square

You can browse real readings from the community. It's like seeing how other people work through decisions using the same ancient system. Super educational and somehow comforting—you realize you're not alone in your questions.

Fair pricing:

- Core features (quick lookup, hexagram encyclopedia, history): Free forever

- AI interpretations: Generous free tier, then fair subscription

- No ads, ever

I'd love your feedback on:

- Does the AI interpretation feel helpful or generic?

- Should I add more languages?

- What other features would make this more useful?

Thanks for checking it out! Happy to answer any questions about I Ching, the tech stack (Astro + React + AI), or why an ancient Chinese divination system might still be relevant today. 😊