In the past you might have installed titles you no longer need, or do not need on a specific device. This article describes how titels can be removed.
Also titles are sometimes updated in the store. If you subscribe to newsletters you might be informed of this. The current version of the app does not automatically update material You have to remove the title and install it again.
So how to delete a title?
First go to the list of available titles. Note, for Bibles that is in the main screen and for commentaries, dictionaries, lexicons and other books in the second screen.
Select the title you wish to delete and click on the Information button. At hte top of the screen you can now delete that title.
The title is now deleted.
If you wanted to refresh the title you can now go the the store and download it again.