Typical upgrade sprint
Layout and SDK pass for a live iOS app that already works on today’s iPhones. Longer if the codebase is far behind or heavily custom UI.
iOS campaign
Is your app ready for iPhone Duo?
Apple’s foldable iPhone has a compact outer screen and a large inner display. Existing apps will run — without an update they can look letterboxed or stretched. We do the layout and SDK pass so yours uses both screens properly.
Live iOS appsFitnessHealthCommerce
Why this matters
The problem
Closed and open are two different canvases. Most shipping apps were built for one.
01
Closed vs open
The outer screen is a phone. Unfolded, the inner display is much larger. Layouts that assume one width look sparse, letterboxed, or oddly scaled on the inside.
02
Fixed widths and orientation locks
Hard-coded frames, single-orientation flows, and modals sized for a classic iPhone do not reflow when the device opens, rotates, or is held partly folded.
03
A current SDK is what unlocks the inner display
Rebuilding against current Xcode and iOS APIs — size classes, flexible stacks, split views where they help — is what lets the app use the large screen instead of stretching a phone layout.
Delivery
What we do
A focused upgrade on the app you already ship — not a greenfield rebuild.
01
Audit layouts
We walk closed, open, and rotated states and list what breaks: letterboxing, clipped chrome, locked orientation, media that does not scale.
02
Adaptive UI
Size classes and flexible containers. Split or two-pane layouts where the inner display has room — not a stretched phone column.
03
Current Xcode / SDK
Rebuild on the current toolchain so the app can actually target the new device, not only run in compatibility mode.
04
Posture testing
Closed, open, and rotated. Scroll position, forms, and playback should survive the fold.
05
TestFlight
A build you can install and tap through on hardware or the latest simulator before review.
06
App Store update
Submission, listing notes, and screenshots that show the unfolded layout — not only the old phone frames.
Scope
What’s included
A typical upgrade is a 1–2 week sprint after we see the app. Exact scope is set in the audit — we do not publish a fake fixed price.
Scoped after we see the store listing
Send the App Store link. We tell you what needs updating, what can wait, and whether React Native or Flutter needs extra layout work.
Fit
Who it’s for
Owners, PMs, and founders of a shipping iOS app — especially fitness, health, and commerce — who want a fast pass before and around the October 2026 Duo window.
- The app is live on the App Store today.
- You care how it looks on the large inner display, not just that it launches.
- You want TestFlight and an App Store update, not a six-month rewrite.
Fit
Who it’s not for
If you do not have a live app yet, this is the wrong page.
- Brand-new MVPs and prototypes. Start at From prototype to production — same studio, different job.
- Idea-only, with no App Store listing to audit.
Will my app work on iPhone Duo without changes?
It will almost certainly launch. Without a layout pass it can look letterboxed, stretched, or locked to a phone-sized column on the inner display. “Runs” and “feels right” are different jobs.
Do we need a full rewrite?
Usually no. Most live apps need an adaptive-layout and current-SDK pass, not a new product. If the UI is a pile of magic numbers we will say so in the audit — before any sprint starts.
We built it in React Native or Flutter. Does that matter?
We still do the work. Native Swift/SwiftUI gets Apple’s adaptive APIs most directly. React Native and Flutter can support Duo; we verify how each reports size changes and fix layouts that assumed a fixed phone.
How fast can you turn this around?
A typical upgrade is a 1–2 week sprint after the audit. Exact timing depends on how custom the UI is and how far behind the current SDK you are. We scope that from your App Store link, not a guess on this page.
What about Android foldables?
This campaign is for iPhone Duo. If you also ship Android, we can include foldable layouts in the same engagement — say so on the audit call. The default scope here is iOS.
Send your App Store link — we’ll tell you what needs updating.
Book a Duo readiness audit. Paste the listing, tell us native / React Native / Flutter, and we will say what is shippable in a short sprint.
Let's Talk
Book a Duo readiness audit. Paste the listing, tell us native / React Native / Flutter, and we will say what is shippable in a short sprint.
