Blog · October 3, 2026

EmpiricCommander on iPhone Duo: two panes when it opens, one when it closes.

A dual-pane file manager has always wanted a bigger screen than a phone. On an iPhone, EmpiricCommander has made do with one pane at a time and a tab bar. The iPhone Duo opens into a 7.6-inch display, and that is enough room for the layout the app was built around.

So EmpiricCommander decides by the space it is given, not by what kind of device it is on. Unfold the phone and you get two panes. Fold it and you are back on the phone layout.

Unfolded: the iPad layout, on a phone

On the inner display, EmpiricCommander runs the same two-pane window as on an iPad: two folder views side by side, a command toolbar, the sidebar, the Shelf bar and a status bar. Drag a file from one pane to the other to copy it, whether the panes show the phone itself, an SFTP server, an SMB share on your NAS or an S3 bucket.

It stays two panes whichever way you hold it. In portrait each pane is narrower, in landscape each has more room for the file name and its details. Settings and your connections are in the toolbar.

Folded: the iPhone app you already know

On the cover display the app is the iPhone app: one pane at a time, with Browse, Shelf, Cloud and Settings in a tab bar along the bottom. Compare, Folder Sync and Checksum still reach a second folder, as they do on any iPhone.

What survives the fold

Switching layouts halfway through something is the part that is easy to get wrong, so this is what EmpiricCommander keeps when you fold or unfold:

  • Both panes stay where you were - the same folders on the phone, and a server folder when you fold.
  • An open preview - Quick Look, an image, a rich preview - stays open.
  • A running transfer keeps going. Folded, it shrinks to a bar with its progress and a Cancel button, and it completes.
Unfolded: two panes side by side. Left, the Demo Files folder On My iPhone with its files and sizes; right, a Photos tab showing All Photos as a grid of six pictures. A command toolbar runs across the top and the Shelf and status bars along the bottom.Folded: the phone layout on the cover display, one pane at a time. Demo Files is the active tab, in the same folder as before the fold, and a second tab is labelled All Photos. Browse, Shelf, Cloud and Settings in the tab bar.
Unfolded, then folded: the Demo Files folder is still the one on screen. A development build of 2.15.2 in Apple's iPhone Duo simulator (iOS 27.1 beta).

And, honestly, what it does not keep. A pane showing your photo library goes back to the top of the library when you fold. A selection does not carry across. An open sheet - Connections, Shelf, Settings - closes. With several SSH sessions open on the unfolded screen, folding keeps only the one you were typing in.

How we checked, and what we have not

The iPhone Duo ships on October 23. Nobody outside Apple has one yet, including us. What is described here is verified in Apple's iPhone Duo simulator (iOS 27.1 beta), folding and unfolding with work in progress, on development builds made with the shipping Xcode: the layouts, an open preview and a running transfer on 2.15.1, the folder locations on 2.15.2. It is not a claim that it was tested on the device, and if the real phone disagrees with the simulator, this page will say so.

Two known rough edges on the unfolded screen in landscape: the Settings sheet opens as a phone-style sheet pinned to the bottom edge, and the terminal's key bar runs into the sensor area along the right edge.

Licence: a Duo is your iPhone

EmpiricCommander is $49.99, paid once, and covers one Mac, one iPhone and one iPad, with a 7-day trial first. An iPhone Duo counts as the iPhone. If you move to a Duo from another iPhone, deactivate the old phone on your account page and the Duo takes its place.