Engineering
Native iOS App Development in Swift & SwiftUI
iOS apps built in Swift and SwiftUI that feel at home on the platform: fast, precise, and finished to the standard Apple users notice. From first prototype to App Store and beyond.
iPhone users have sharp instincts for quality. They feel a mistimed animation, a scroll that hitches, a sheet that dismisses wrong — even if they never name it. Building for that audience means more than making features work: it means honouring platform conventions, Swift concurrency done properly, and the hundred small decisions that separate an app that functions from an app that feels designed. That is the work we do, and it is the only kind of iOS work we take on.
Platform-true
apps that respect iOS conventions and pass review cleanly
Fast by design
startup, scroll, and animation budgets measured from the first sprint
Built to last
testable architecture your own engineers can take over
Swift and SwiftUI, built to Apple's grain
We build in Swift with SwiftUI for new work and UIKit where it remains the pragmatic choice, following Apple's Human Interface Guidelines rather than porting a generic design across. Concurrency uses async/await and actors; state is modelled explicitly so screens stay predictable as the app grows. We lean on platform frameworks instead of reinventing them — the result feels native because it is.
- SwiftUI for modern UI, with UIKit interop where it is still the sharper tool
- Swift concurrency with async/await and actors — no callback tangles
- Human Interface Guidelines respected: navigation, gestures, haptics, Dynamic Type
- Platform capabilities used properly — widgets, App Intents, Live Activities where they earn their place
Interaction quality is an engineering discipline
The difference between adequate and excellent on iOS lives in motion and responsiveness: transitions that track your finger, lists that never drop frames, feedback that lands within the perceptual budget. We profile with Instruments as part of the build, not as a rescue mission, and we treat 120Hz smoothness on ProMotion displays as the bar.
- Interruptible, gesture-driven transitions rather than fire-and-forget animations
- Frame-time and hitch profiling with Instruments during development
- Startup time, memory, and energy budgets set early and measured continuously
- Accessibility built in: VoiceOver, Dynamic Type, reduced motion, contrast
App Store review and release, handled early
Most App Store rejections are avoidable and expensive when they land the week before launch. We handle privacy manifests, required-reason APIs, entitlements, and tracking disclosures during the build, and we prepare metadata and screenshots with the same care as the app itself. Where a feature pushes a grey area of the guidelines, we flag it early so review day holds no surprises.
- Privacy manifests, App Tracking Transparency, and entitlements configured up front
- TestFlight pipelines with automated build, signing, and distribution
- Guideline risks surfaced during design, not at submission
- In-app purchase and StoreKit integration done to spec
Architecture your next team will thank you for
An app is a long-term asset, and the codebase is where that value lives or leaks. We keep business logic out of views, wire in unit and UI tests where they pay for themselves, and document the decisions that matter. Whether we maintain the app for years or hand it to your in-house team, the code reads like it was written on purpose.
Every engagement includes
- Native architecture planning before code
- Senior developer review on every pull request
- App Store & Play Store launch support
- 3 months of free post-launch support
Frequently asked questions
SwiftUI or UIKit for a new app?
SwiftUI is our default for new apps — it is Apple's primary UI framework and it speeds up both development and iteration. UIKit remains available through interop for the cases SwiftUI does not yet cover well, such as some advanced collection and text layouts, so we mix the two pragmatically rather than dogmatically.
Can you take over an existing iOS codebase?
Yes. We start with a structured review of architecture, dependencies, test coverage, and release health, then agree a plan: sometimes incremental modernisation screen by screen, sometimes targeted fixes to the areas causing the most pain. We only recommend a rewrite when the evidence genuinely supports one.
Do you handle the App Store submission and launch?
End to end. We prepare privacy disclosures, metadata, and screenshots, manage TestFlight beta cycles, and shepherd the app through review. After launch we monitor crash reports and performance metrics so the first weeks are stable rather than stressful.
Where are your iOS developers based?
The studio is based in Sydney, and we work with clients across Australia and internationally. Design reviews and planning run over video or in person; every engagement gets direct access to the senior engineers doing the work rather than a delivery team behind an account manager.
Related services
- Native Android DevelopmentAndroid apps built in Kotlin and Jetpack Compose that feel considered on a flagship and stay smooth on the mid-range devices most people actually carry.
- Mobile UX/UI DesignInterface design for iOS and Android by people who understand what the platforms can do — screens designed around speed, clarity, and native behaviour, delivered as specs engineers can actually build.
- MVP to ProductionA first release scoped to what proves the product, built natively on foundations that survive success. Ship, learn, and grow the same app — not a prototype you have to rebuild.
From the blog
- Performance Budgets for Mobile Apps That Stay FastApps do not become slow in one release. They erode, one unmeasured regression at a time. Budgets — with numbers, owners, and CI enforcement — are how fast apps stay fast.
- Native or Cross-Platform: Deciding Like an EngineerThe native-versus-cross-platform debate is usually argued with slogans. Here is the decision framework we actually use, including the cases where we would not recommend native.
- What Makes an App Feel NativeUsers say an app "feels nice" or "feels off" and can rarely explain why. The reasons are concrete, learnable, and mostly invisible in screenshots. Here is the checklist we build against.
Ready to talk about native ios development?
Tell us what you're building. We'll bring senior engineering review and a candid view of what it takes.