Make your app iPhone Duo ready.
Apple's first foldable is here, and most apps aren't ready for it. We rebuild, adapt, and test your iOS app for every fold state — so it fills the screen and feels native, open or closed.
Starting at $999 · Delivered in as little as 1 day
Trusted by teams at IBM, Ford, Etsy, Guardian, Webflow, and more.
Your app is already running on iPhone Duo. Is it ready?
It’s already in your users’ hands
iPhone Duo is shipping now. Every user who unfolds it sees exactly how your app handles the bigger screen.
Older builds leave screen on the table
Apps built with earlier SDKs don’t extend under the status bar and camera. Rebuilding with Xcode 27 or later unlocks the full display.
Optimized apps stand out
The App Store now highlights apps optimized for iPhone Duo. Unoptimized apps look stretched next to the ones that are.
Everything it takes to feel native on the fold.
Native SwiftUI and UIKit, or cross-platform React Native and Expo — we handle the whole job.
Full-screen rebuild
Rebuilt on the latest SDK so your app fills the entire display, edge to edge.
Adaptive layouts
No hardcoded screen sizes. Layouts follow scene geometry and size classes and reflow as the phone opens.
Every fold state
Tested closed, open, and partially folded — in every orientation.
Seamless transitions
Scroll position, input, and navigation survive every fold and unfold.
Big-screen layouts
Two-pane, list-detail, and sidebar layouts that make the inner display worth opening.
App Store ready
An updated, tested build ready for App Store review — submitted for you if you like.
Duo-ready in as little as 1 day.
Your exact timeline depends on the size of your app — we confirm it before any work starts.
- 1
Tell us about your app
Two minutes. Your stack, your app’s size, and what you need.
- 2
We audit every fold state
We run your app closed, open, and partially folded and map every screen that breaks.
- 3
We adapt and rebuild
Latest-SDK rebuild, adaptive layouts, and big-screen polish where it counts.
- 4
Test and ship
Verified across fold states and orientations, then handed off or submitted to the App Store.
Starting at $999 · Delivered in as little as 1 day
Trusted by teams at
Get your app iPhone Duo ready
Tell us about your app. We'll confirm scope, timeline, and price before we start.
Starting at $999 · Delivered in as little as 1 day
iPhone Duo app optimization FAQ
Doing it in-house? Read our iPhone Duo developer checklist →
What does it mean to make an app "iPhone Duo ready"?+
It means your app is rebuilt and adapted for Apple’s foldable iPhone Duo: it uses the full display, reflows cleanly when the phone opens, closes, or sits partially folded, keeps the user’s place through every fold, and is ready for App Store review.
Will my existing app run on iPhone Duo without changes?+
It will run, but apps built with older SDKs don’t extend under the status bar and camera, so they don’t use the full screen. Rebuilding with Xcode 27 or later and replacing hardcoded screen sizes with adaptive layouts is what makes an app look native on the Duo.
How fast can you make my app iPhone Duo ready?+
In as little as 1 day. Your exact timeline depends on the size of your app — we confirm it with you before any work starts.
How much does iPhone Duo app optimization cost?+
Starting at $999. Larger apps or extra work like two-pane layouts for the inner display are quoted up front, before we begin.
Do you work with React Native and Expo apps, or only native Swift?+
Both. We optimize native SwiftUI and UIKit apps as well as cross-platform apps built with React Native and Expo. Tell us your stack in the form and we’ll confirm the approach.
What do you need from me to get started?+
A few details about your app, access to its source code (a repository invite or a project export), and App Store Connect access if you’d like us to handle submission.
How do you test across fold states?+
Every screen is checked closed, open, and partially folded, in each orientation, including the transitions between them — so layouts reflow and no state is lost mid-fold.