Opal Reader

Opal Reader

Read PDFs and EPUBs on iPhone Duo

Opal Reader is a PDF and EPUB reader that puts a notebook right beside the page. On iPhone Duo, you can unfold the screen to read your book and your notes together, then fold it closed and keep reading in a compact view with your place saved. It is also available on iPhone and iPad, so you can keep your reading and notes close at hand.

Launch Team / Built with

JT

Socials

Launched November 13, 2026