Best of
The 10 Best Apps for iPhone Duo
Only apps with a public source showing iPhone Duo support: Apple's own announcement, or the developer's release notes or blog.
All articles
6 articles in 1 topic
Launch and iPhone Duo
Guide
How to Read PDFs on iPhone Duo: Book Mode, Two Pages and Split View
Step-by-step: open a PDF with Apple's built-in apps, read it in every fold, get two pages side by side, and put two documents next to each other.
Guide
iPhone Duo Split View: 12 App Pairs for Document Work
What Split View on iPhone Duo can and can't do, how to set up a pair, and twelve pairs that make document work faster.
Behind the scenes
How We Designed a PDF Reader for Every Fold of iPhone Duo
The decisions behind Duet on iPhone Duo: what goes on each half, what stays off the crease, and why a fold should never cost you your place.
Release
Duet: Made for iPhone Duo
Why we built a PDF reader for the foldable iPhone, and what Duet does closed, half-open like a book, fully open, flat on a table and in Split View.
Best of
The Best PDF Readers for iPhone Duo
Three PDF readers have confirmed iPhone Duo support at launch. Here's how they, Apple's built-in apps and the big names handle the fold, the second half of the screen and Split View.