Welcome to the
Yi Jing Library.

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

Latest News

October 2022

Our team has invested great effort into placing the I Ching Library app on a new, highly modern technical foundation. Version 4.0.0 is the first version developed with Flutter and is now available for Android smartphones as well as iPhones and iPads. Versions 3 and 4 are similar in terms of functionality, except that version 4 feels even faster and more responsive. Your previous purchases from version 3 are automatically carried over into version 4.

Latest News

You can import your personal old questions from the older version 3 of the app into version 4 by first exporting your questions from version 3, or by simply installing version 4 on top of version 3 and then opening the data management dialog.

Other notable new features in version 4:

  • The commentary texts have been revised.
  • The comparison function between comments has been improved.
  • Help dots help new users to get started.