Welcome to the
Yi Jing Library.

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

Latest News

October 2021

  • Android Users:
    • Our app, like many others, is based on the Qt framework. Qt is currently being adapted to the newest Billing Library, which will be required by Google starting November 1st. Therefore, our app will probably be removed from Google Play Store for a few days and no editions will be available for download from that date. Your existing app and library should continue to function. Unfortunately, the exact release date is still unknown. We will update our app as soon as the new version of Qt is published. We thank you for your understanding and patience.
  • Balkin Edition:
    • The Balkin Edition has been restored and is available again.

September 2021

  • Balkin Edition:
    • The edition is still being revised and is expected to be available again in October.

Latest News

August 2021

  • Balkin edition:
    • It is expected that this edition will be available again between October and November.

July 2021

  • Balkin edition:
    • Special characters in this edition are not displayed correctly. Therefore, the edition has been temporarily disabled in the store. We are in the process of addressing this issue. As soon as the problem is solved, the edition will be reactivated. You have already purchased the edition? Please don’t worry. The Balkin edition will be available again on your device(s) after its reactivation.