Ancient oracle meets modern classic! Explore an interactive English version of "The I Ching or Book of Changes" by Richard Wilhelm, edited by Hellmut Wilhelm, and translated by Cary F. Baynes, using a coin oracle or yarrow stalks, and an integrated journal.

NOTE: The text is only in English.

The I Ching, or Book of Changes, a common source for both Confucianist and Taoist philosophy, is one of the first efforts of the human mind to place itself within the universe. It has exerted a living influence in China for 3,000 years, and interest in it has been rapidly spreading in the West.

“Princeton's Bollingen edition—still regarded as the best and most authentic by I Ching aficionados.”

The complete work is available in three books. Book I is included with the I Ching or Book of Changes app. Book I includes Judgments pertaining to the diagrams as a whole, the line texts, and the Great Images.

Book II and III are available for additional in-app purchase.

Book II: The Material
Contains the Shuo Koa and the Ta Chuan from the Ten Wings, plus The Structure of the Hexagrams.

Book III: The Commentaries
Contains passages from the Ten Wings considered commentary to the texts, and On Consulting the Oracle.

Text © 1950, 1967, renewed 1977 by Princeton University Press. Used with permission.

Additional features:

Coins, yarrow stalks, quick and manual input oracle methods
Integrated journal for questions and notes
Component trigrams
Related Hexagrams

What’s New

Version 2.3.2

* Increased the default font size of book content
* Improved keyboard support on the Journal item page
* Improved book content layout on large iPads
* Added the standard app review prompt
* Updated stale web links

Ratings and Reviews

4.9 out of 5
101 Ratings

101 Ratings

Zzzzzzzzzzzz!! ,

Online Wilhelm I Ching

I’ve consulted this I Ching book for decades. It is my favorite. I usually use the coin method, but I enjoy the yarrow stalks in the app too. I usually meditate on my question at least the night before consulting the oracle so that my question is already to go when I consult the app. Then in just a few shakes, the Universe lines up and answers my question.

To me the I Ching Is not a plaything, but a serious way of looking at my life. I consulted the Book of Changes at the beginning of the pandemic. My hexagram? Number 5, changing to number 17 with lines 2, 3, and 4. It as all came to pass. I also enjoy printing my hexagrams, even though they are located in the convenient journal.

I’ve been using this app ever since it was released. This is my favorite version of the Book of Change, and it’s good to always have it on my iPhone, close by.

Thank you

Epikierian ,

I use this everyday.

Updated: With the recent update my entire journal history was wiped away. Years of readings. Moments of profound contemplation, crucial turning points in my life and my realizations relevant to them. It was a huge loss for me.

My previous review
This is a really great app. It is a way to cast the Yi Ching, with some other great features. But it also includes a translation of the Yi Ching that is very good. Wilhelm's translation is my favorite. Reading the book feels like sitting with a wise old granddad that instructs you in what to be careful of as you navigate the world. It is exactly the type of wisdom our modern culture has eliminated from our character. The text alone is worth the price of the app. But that it includes statistically accurate casting makes it a really great value. It is easy to use. Really, get this app. Great product.

Developer Response ,

Since the app hasn't been updated in a while, this is most likely a temporary issue with syncing over iCloud. Please contact us through the Feedback option in the app, or by contacting us via the support link in the App Store or directly from our web site, for additional troubleshooting steps to recover your journal.

M for evernote ,

Ancient Wisdom is needed to guide us today

The ancients used wisdom tools
Such as the I Ching to build great civilizations of high moral character. It’s because the counsel received pointed to elevating the character of the one asking the I Ching the question. Today this same guidance is needed more than ever. Imagine if the leaders of society consulted the I Ching before they made important decisions. You can create a culture of living by wisdom now. Learn the
I Ching and make a better present and better future for yourself and family.

App Privacy

The developer, Flat Earth Studio LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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