One Week In, Here Are My Favourite iPhone Duo Apps

Sunday, Nov 01, 2026

The iPhone Duo has unlocked some new design choices from the App Store’s best developers. These apps have never been more beautiful.

The iPhone Duo has been in my hands for just under one week. And it’s been a week — I am so far away from developing a firm opinion on this device, I doubt I’ll be able to put coherent thoughts together by Christmas.

In a sense, I think this may be a microcosm of what we saw out of pre-release reviews. Some reviews suggested “the future is foldable!” boldly, while others said the Duo is effectively a beta device. I disagree with both positions, but don’t have my own firmly held position yet. I hope time will tell.

For now, I want to highlight some of my favourite iPhone Duo apps from this first week. It’s almost like app design has discovered a new echelon — the best apps shine on iPhone Duo in ways I never thought possible. Some usual culprits are here, and I’ve left a few off that look stunning but which I’ve praised over and over for about 10 or 15 years.

Bear Notes

I haven’t subscribed to Bear in a long time, but this app on iPhone Duo is going to make it difficult to hold off.

Bear has been around for a long, long time, and is one of those rare apps where I catch myself wondering if I should have stuck with it all these years. Bear went through a period of time with little to no updating years ago, causing folks to look elsewhere to take advantage of the latest iOS and iPadOS features. I was one of those. I remember being so completely content with my note-taking app at that time, and I don’t believe I’ve reached that level of nirvana since.

The note view in Bear is expansive and provides your notes and drawings ample room to breathe.
I really like the way Bear has put navigational controls on left and right sidebars. So far, in my opinion, the best Duo apps make use of both sides of the screen.

Bear on iPhone Duo is better than I could have imagined. The app makes use of the multi-pane view in a beautiful way, and showcases your notes with ample space on the right. Navigation buttons hug the right and left side to move between panes and views. To my eye, it all just works in a beautiful way.

I’m not a Bear Notes subscriber, but I might be if I keep looking at the app.

(The New) Reeder

I’ve been a Reeder Classic user since the inception of the App Store, but this is the first iPhone that hasn’t had an immediate update to the Classic app in a long, long time. Instead, I went looking at the new Reeder (the “waterfall” Reeder, I’ll call it, as new feed content cascades into the app and provides a waterfall of new content to view) to satisfy my RSS itch.

The new Reeder has snuck its way onto my home screen.

It took a bit to understand how the new Reeder works. It doesn’t showcase unread posts in the same way Reeder Classic does. Instead, it pulls from your feeds (and your feeds can encompass Reddit, YouTube, Mastodon, and RSS feeds; vastly more than Reeder Classic) and you can tap on a feed to scroll through the list. There doesn’t seem to be a visual cue denoting what is read or unread, apart from a number in the top corner of the “Home” feed. It’s a bit odd at first. Once I got used to it though, the new Reeder has become one of my favourite apps on iPhone Duo.

Reeder is particularly adept at the paned-view, as seen above.
I struggle to determine where I should be reading RSS — in Reeder, or in a dedicated reading app like Readwise.

I’d argue Reeder has always been the best “paned” app available. It makes use of different pane columns to handle navigation, and everything works so fluidly on the Duo’s landscape display. When it’s time to read, you can flip into portrait mode and have a comfortable reading view.

All in all, the new Reeder is a new addition to my Home Screen thanks to how fun it is to use on the iPhone Duo.

Fantastical

The world’s best calendar app simply hasn’t ever looked better. (Sorry for all the redactions.)

Apple has been showcasing the Duo’s landscape orientation with an image of the stock Calendar app in a week-view. That screenshot is gorgeous, I will admit. But rest assured, Fantastical has that beautiful weekly screenshot on the Duo covered in spades, and it has a plethora of other ways to navigate your calendar. Fantastical has long been one of — if not the — best calendar app across iPhone and iPad, and somehow it feels the best it’s ever felt on the iPhone Duo.

Take the weekly view, which is my most-used view. In landscape, the weekly view can be viewed a few different ways:

  1. Month scrubber and event list on the left, weekly view on the right.
  2. Just a weekly view, with the left sidebar collapsed.

You can also drag the monthly scrubber and event list pane left or right to provide more or less breathing room, as you prefer. No matter how you work it, your calendar is displayed beautifully, with ample room for actually reading event titles. So many calendar apps get this wrong.

Normally weekly views in a portrait orientation are useless and cramped. Not on iPhone Duo.

It’s equally pretty in portrait orientation. My only recommendation to the Flexibits team so far would be to expand the number of numerals and punctuation marks available in the extra keyboard row above the portrait orientation keyboard. Otherwise, Fantastical is the best version of itself on the iPhone Duo.

Kindle

I showed off the iPhone Duo to some tech enthusiasts in my first 48 hours of ownership, and the first app I showed them all was the Kindle app. The Kindle app isn’t even updated for the Duo! And it still made this list.

I am not sure there is a cleaner reading app than Kindle on iPhone Duo.

When in portrait orientation, the iPhone Duo is effectively a Kindle-sized device. iOS 27 by default extends the top nav bar to the top of the display, producing an efficient, distraction-free reading environment that would rival any e-reader on the market. It may not be e-ink — I’ve learned you don’t mess with the e-ink community — but the nano-texture display and Kindle-sized device make for the most comfortable reading device Apple has ever produced.

Can we also take a moment to admire Amazon’s special Kindle font? Bookerly has to be my favourite font ever produced. On the Duo display, Bookerly is crisp, yet smooth. It’s just the right weight. The font itself is probably worth using an unoptimized Kindle app over any other reading app available for the Duo.

Microsoft Outlook

I’m a Superhuman user, and it’s going to be difficult to take Superhuman away from me at this point. I attempted to use any number of other email apps for about a month three months ago, and I came crawling back to Superhuman ashamed of my curiosity. Microsoft Outlook for iPhone Duo has me curious, again.

More redactions, I apologize. Outlook is sneaky good on iPhone Duo and I could be convinced to give it a try over Superhuman.

Microsoft has always done an impressive job keeping Outlook updated for iPhone and iPad. Outlook for iPhone Duo is probably the most balanced app I’ve found thus far. It does a superb job of moving navigational buttons to the right and left sidebar when in landscape orientation, and the composing view with the big portrait keyboard is a dream. This might be the first time I choose to compose emails on iPhone rather than leave the iPhone simply for email triage.

If I ever have to move away from Superhuman — be it because of an email provider change or Superhuman being purchased — I now know my first stop will be back in Microsoft-land. I almost can’t believe I just said that.

Wrap Up

There are a number of other notable iPhone Duo app mentions. The usual culprits are all here: Things 3, Ulysses, CARROT Weather, Craft, and Day One all have many of the same traits as the five apps I’ve noted above.

But there’s just something extra special about the five I’ve written about. These apps have found a rebirth on the iPhone Duo, if you ask me. I haven’t used Fantastical or Bear in a long while now, but I’m almost certain to resubscribe to both. Reeder is in the same boat — the new Reeder debuted and I bounced off instantly. On the iPhone Duo though, Reeder comes to life. Microsoft has somehow positioned Outlook as the best email app for iPhone. And you simply have to see the Kindle app to believe it. It’s such a joy and may make the iPhone Duo worth the money all on its own.

I can’t wait to see where developers take Apple’s new iPhone foldable. This is the most excited I’ve been about a new iPhone since the iPhone 5.