Shrinks a photo to the file size you choose, with Duo support open or closed
Does Photo Compressor to KB/MB work on iPhone Duo?
Yes, the developer says so: the release notes for version 1.0.5 say the app supports iPhone Duo, open or closed, in either orientation.
- App Store confirmedSatomi Chiba, the developer, in the App Store release notes for version 1.0.5 (released October 15, 2026), which say the app supports iPhone Duo, open or closed, in either orientation. The App Store pictures show ordinary iPhones.
Adapted for the fold
We're waiting on details of exactly what Photo Compressor to KB/MB changes for the fold. Are you the developer? Tell us.
About Photo Compressor to KB/MB
Photo Compressor to KB/MB shrinks a photo to a file size you pick, such as under 1 MB or 500 KB, for upload forms and email attachments. It finds the best-quality JPEG that fits, resizes only when needed, and shows the original and compressed sizes side by side.
The release notes for version 1.0.5 say it supports iPhone Duo, open or closed, in either orientation, without describing what changes.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· App Store page reviewed
App Store confirmed · iphone-duo
The App Store release notes for version 1.0.10 (released October 23, 2026) mention iPhone Duo: "Added clear screenshots for iPhone Duo."
App version: 1.0.10.
Store text only: we haven't seen the app running, and the store page doesn't show how each pose is used.
View reviewed evidence ↗
Related guides
The best iPhone Duo apps so far (October 2026)
The apps worth installing now that iPhone Duo is on sale, from the apps Apple named as launch partners to indie apps whose developers have shown a real iPhone Duo layout, picked for what they do when you open the phone.
Do your apps work on iPhone Duo? What happens before they're updated
Every iPhone app opens on iPhone Duo, but only updated ones fill the inner display. What an app looks like before its developer adapts it, how to tell which are ready, and which popular apps have said so.
Is this your app?
Add the badge to your site or press kit. It links back to this page, where fans can upvote you.
<a href="https://foldhunt.com/apps/photo-compressor-to-kb-mb/"><img src="https://foldhunt.com/badges/featured-on-foldhunt.svg" alt="Featured on FoldHunt" width="220" height="54"></a>Need to update the listing? Email the editor.
Sources: Photo Compressor to KB/MB on the App Store (apps.apple.com)
More for iPhone Duo
Detail
Detail Technologies
On-device AI video creation, built on the new Core AI framework.
Launch partner: Named by Apple as an iPhone Duo launch partner.
- Open
Edits
Instagram's video editor, with the timeline, tools and video together on the open Duo
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 453.1 (released October 27, 2026) don't mention the Duo.
- Open
VLLO
Vimosoft
Video editor with more of its controls and your footage on screen when open
Launch partner: Named by Apple in its Newsroom article of October 22, 2026, on apps optimized for iPhone Duo. The App Store release notes for version 15.0.3 (released October 27, 2026) say: "[Optimized for iPhone Duo] We’ve optimized the UI for a smoother experience on iPhone Duo."
- Open