Welcome to the
Yi Jing Library.

The Yi Jing Library is the world’s leading app for working with the Book of Changes.

The intelligent database with extensive commentaries on Yi Jing
Already over 4'000 pages of texts and commentaries in the library
All text passages and interpretations of your question at your fingertips
Your smartphone or tablet displays all information, even when you are on the move
Customizable user interface, multilingual navigation, large selection of fonts
Wilhelm and Baynes translations already included
Many additional commentaries available for purchase in the in-app shop
Published for the first time: a completely new commentary on the dynamics of the Yi Jing
Published for the first time: the first Latin translation of the Yi Jing in electronic form
Published for the first time: James Legge’s commentaries in the structure of the Wilhelm translation
New commentaries are constantly added to the library
Comparisons between commentaries
Collection of frequently asked questions and answers about the Yi Jing
Secure archiving of all your questions and answers
Share questions and answers with friends
Offline mode: The app works without internet connection.
Mac version from 2021

Latest News


  • The storage of images and texts for the help function will be moved from the Yi Jing Library app to the Yi Jing Web. This ensures a speedy download of the app.
  • In order to make the Library app accessible to a broader audience, we have lowered the price of the basic version from US$ 5.00 to US$ 3.00.


  • Initial tests for porting the Yi Jing Library to Windows PCs and Macs with Intel processors show positive results.
  • Tests on new MAC computers with ARM processors are successful.
  • Version 3.1 of the app is currently in the testing phase. The backup for all divinations is simple to use. With its help, the divinations can be easily exported to or imported from other devices.

Latest News


  • We have obtained the copyright for the French Perrot edition of “I Ging” by Richard Wilhelm. It will be published together with the French version of the app.


  • The Yi Jing Library is now also available in Apple’s Chinese App Store! However, the Chinese market is still closed to our Android version.
  • Thanks to proper and careful maintenance of search algorithms, our app is now more visible and easier to find.