Photo editing with the picture in view
Editing a photograph on a phone means choosing, at every moment, between seeing the picture and seeing the controls. That is the compromise the fold removes, and it is a bigger one than it sounds.
A photo editor has three things it wants on screen: the image, the adjustment you are making to it, and the other images you are comparing it against. A folded phone fits one and a half of those. Every mobile editor's design — panels that slide away, tools that take over the bottom third, a filmstrip you summon — is an answer to that shortage, and the answers all cost the same thing: you judge an edit you cannot fully see.
The cameras come before the editors here, for a reason that is specific to this device. A folding phone can put a viewfinder on one half and manual controls on the other, and the apps with the most controls are the ones with the most to gain from not stacking them over the picture.
RAW is where this matters most. Fine adjustments to a file with real latitude in it are exactly the edits you cannot make through a keyhole, which is why the pro-leaning entries sit above the ones built for a quick fix.
- 1
Darkroom: Photo & Video Editor
Photo editing · Bergen Co.
RAW editing where the filmstrip, the histogram and the photograph can share a screen instead of taking turns. Folded, one of those three is always behind the other two; unfolded, the comparison between two frames stops being a memory test.
- 2
Photomator
Apple Distribution International
Colour adjustments, automatic selections and a long list of supported RAW formats, by the developer's description. Selections are the operation that most needs a big view — you cannot judge a mask you are looking at through a magnifying glass.
- 3
Halide Mark III - Pro Camera
Lux Optics Incorporated
A camera, not an editor: manual controls, and the option to turn the phone's own processing off. Controls and viewfinder compete for the same glass on a folded phone, and an unfolded one is the first chance this kind of app has had to stop stacking them.
- 4
Capture One
Capture One A/S
The desktop tethering-and-culling tool, in mobile form. Culling is the job that is purely about screen area — you are looking at frames side by side and deciding which survives — and it is the single clearest case on this list for more of it.
- 5
Project Indigo
Adobe Labs, Inc.
Adobe Labs' camera, built around a computational pipeline aimed at a natural look, with full manual controls. It is an experiment rather than a product, and it is here because experiments with a lot of controls are exactly what a second screen is for.
- 6
Snapseed: Photo Editor, Camera
Google LLC
Free, properly capable, and organised around tools you apply to a region of the image. Every one of those tools is a gesture over the picture, which means your hand is on the thing you are trying to look at — rather less of a problem when the picture is bigger than your hand.
- 7
Pixelmator Classic iOS
Apple Distribution International
Layer-based editing, with shapes and text composited over an image. Layers are a list, the image is a canvas, and a phone makes you choose which one is on screen. This is the compositing case rather than the photography one.
- 8
Photoshop Express Photo Editor
ADOBE SYSTEMS SOFTWARE IRELAND LIMITED
The quick-fix end of Adobe's range, aimed at a crop, a straighten and a filter. Honest placement: it gains the same as everything else from a bigger preview, and it needs it least, because the edits are decisions you make in a second.
- 9
Photos
Apple Distribution International
The library every other app on this list reads from, with editing built in and no setup at all. The gain here is browsing rather than editing — a grid of thumbnails is a question of how many you can see at once, and that is pure area.
- 10
Google Photos: Backup & Edit
Google LLC
The other library, for anyone whose pictures live across platforms rather than inside one. Same argument as above, with search doing more of the work of finding the frame you are after.
The selection and the order are ours. Each entry is written from that app’s own App Store listing, linked beside it, and this page from Apple's iPhone Duo product page. Drafted with AI assistance and checked back against those sources before publishing; the disclosure page explains how. The iPhone Duo has been on sale since 23 October 2026 and nothing here has been seen running on one, so what each entry says about the fold is an argument rather than a test.