OPAL READER ON IPHONE DUO

Help for reading, unfolding and making notes on iPhone Duo. Start with the answers below, and keep a separate copy of important books, documents and exported notes.

Reading on iPhone Duo

Opal Reader is designed for iPhone Duo, with fold-aware layouts on iOS 27.1 or later. Ordinary iPhone and iPad reading requires iOS 27.0 or later. Open your iPhone Duo flat for a wider reading space. In PDF reading settings, choose Book spread for two pages together or Automatic to adapt to the available space. EPUB text reflows to fit your reading pane.

The fold and your notebook

When the fold divides the screen, your reading and notebook sit in separate panes. The layout follows a vertical or horizontal division. On a wide, flat screen, open the notebook beside your book. In compact view, open the notebook as a sheet. Your saved reading position helps you continue as the available space changes.

Import a book or PDF

Use Files or Open In to import a PDF or DRM-free EPUB. Opal Reader creates a separate copy. If a file will not open, check that it downloads fully, opens in another reader and is not protected by unsupported DRM. Enter the document password when prompted for an encrypted PDF.

Highlights, notes and the free allowance

Select document text to highlight, underline or comment. PDFs also support drawing and positioned notes. The free allowance covers three documents, with multiple annotations allowed in each. Deleting a document does not restore a slot. The upgrade is offered when you want to annotate a fourth document. Existing annotations remain accessible and exportable without upgrading. A scanned PDF needs a text layer for word selection; use drawing or positioned notes otherwise.

Restore a Pro purchase

Use Restore Purchases in the app while signed in with the Apple account used for the original purchase. Check that the purchase completed and that the device can reach Apple. Your local price and purchase confirmation appear in Apple’s purchase sheet.

Payments and refunds

Apple processes the one-time Pro purchase. To review purchase history or request a refund, use Apple’s purchase support. Refund eligibility and decisions are handled by Apple.

Free reading and Pro

Free includes unlimited EPUB/PDF reading, bookmarks, all three themes, iPhone Duo layouts and annotation tools in up to 3 documents. Pro costs $14.99 USD one-time; local pricing may vary. Pro removes the annotation document limit and requires no subscription for its listed features. Download Opal Reader from the App Store and unlock Pro inside the app through Apple. Purchased Pro features remain unlocked if pricing changes. Books and paid catalog access are not included.

Optional iCloud sync

Reading on iPhone Duo works locally without an app account. If you choose to enable iCloud sync, supported books, positions, bookmarks, notes and collections use your private Apple iCloud account. Sync supports documents up to 100 MB, runs while the app is open and pauses while reading. Keep independent copies of important files.

Read aloud and catalogs

Read aloud needs text in the document and an available system voice. Scanned, textless PDFs require a separate text-recognition step. Online catalogs need network access; login, downloads and borrowing rules depend on the provider. Check your personal catalog’s server address and credentials if it cannot connect.