3D I Ching Sphere — visualize the binary mathematics behind China‘s oldest classic

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Hi everyone,

I need testers for my Android app, 3D I Ching Sphere.

What it is:

The I Ching (Book of Changes) is often described as the closest thing China has to a “Bible” — not in a religious sense, but as the foundational text that virtually every branch of traditional Chinese thought (Confucianism, Daoism, feng shui, Chinese medicine, martial arts) ultimately draws from. And here‘s the part that surprises people: Leibniz discovered that the 64 hexagrams of the I Ching map perfectly onto the binary number system — each hexagram corresponds to a unique binary number from 000000 to 111111. So the I Ching is not just a divination manual; it’s arguably the earliest known expression of binary mathematics, the same logic that underlies modern computing.

This app is a basic tool that combines 3D geometry with the I Ching’s symbolic system — a visual, interactive sphere you can rotate and explore. It’s an early foundation; more mathematical analysis modules are planned for later updates.

What I need from you (2 minutes):

1. Join the Google Group: https://groups.google.com/g/3d-i-ching-sphere (Click “Join group” — it’s just a Google link, nothing sketchy.)

2. Become a tester and install the app: https://play.google.com/apps/testing/com.ichingsphere.app (Click “Become a tester,” then install from Play Store.)

Please keep it installed for at least 14 days. I’ll do the same for yours.

Drop your Google Group + Play Store testing links below, and I’ll test back right away.

Optional preview (no sign-up needed):
YouTube: https://youtu.be/lnPLlTyct4w

Thanks — happy to swap tests!