Access the Books application library on your iPhone.
Click on the three-dot menu below the book you'd like to add to Speechify's library.
Please select the option labeled "Share Book".
At the bottom of the screen, a selection of applications will be displayed. Please choose the Speechify application, which will automatically import the book to the Speechify library.
💡 It is important to note that this feature only supports PDF files.
Please refer to the attached video for reference.