App Store review rejections
Unclear features, broken demo logins, placeholder content or payment flows that bypass Apple's in-app purchase rules are common reasons a build is sent back.
Mobile · iOS
iOS app development services built around Apple's platform and its review rules
We build native iPhone and iPad apps in Swift and SwiftUI, put test builds in your hands through TestFlight, and prepare privacy details and review notes before the app reaches Apple.
What is iOS App Development?
iOS app development services cover designing, building, testing and publishing apps for Apple's iPhone and iPad. Native iOS development uses Swift, the SwiftUI framework and Apple's SDKs in Xcode, with beta builds distributed through TestFlight and releases published through App Store Connect. Every app is reviewed by Apple against the App Store Review Guidelines before it goes live, so compliance is part of the build, not a final step.
Apple's ecosystem is consistent in hardware but strict in rules. Apps are reviewed by people, privacy disclosures must match what the app and its third-party SDKs actually collect, and builds must be made with a recent Xcode and SDK. Teams that treat submission as the last task often lose time to rejections over login options, in-app purchase rules, incomplete privacy details or missing demo accounts.
Where iOS projects lose time
Privacy disclosure accuracy
App Privacy details, tracking permission prompts and SDK privacy manifests must all match real data collection, including what analytics and ad SDKs do.
Keeping up with Apple's yearly cycle
Each major iOS release changes APIs and design expectations, and Apple periodically requires submissions to be built with a newer SDK.
Ageing Objective-C or UIKit code
Older apps can still work but become slow to change. A gradual path to Swift and SwiftUI avoids a risky full rewrite.
Our iOS App Development service
Native Swift development
Apps written in Swift with structured concurrency (async/await), a clear separation between views, state and data, and unit tests for business logic.
SwiftUI interfaces
Interfaces built with SwiftUI following Apple's Human Interface Guidelines, with Dynamic Type, dark mode and iPad layouts considered from the start. UIKit is used where it is still the better tool.
Apple platform features
Sign in with Apple, Face ID and Touch ID, Apple Pay, push notifications through APNs, widgets, Live Activities, Core Location, camera and HealthKit where your use case needs them.
TestFlight beta programs
Internal and external TestFlight groups so your team and selected users can install builds, report issues and approve releases before they go public.
App Store submission
App Store Connect setup, screenshots and metadata, App Privacy details, age rating, review notes with demo credentials, and phased release once approved.
Modernization of existing iOS apps
Incremental migration from Objective-C or UIKit to Swift and SwiftUI, updating screens in stages while the app remains on sale.
Included capabilities
- Swift with async/await
- SwiftUI with UIKit where needed
- iPhone and iPad adaptive layouts
- Sign in with Apple and passkeys
- Face ID and Touch ID
- Push notifications via APNs
- Home Screen widgets
- Offline storage with SwiftData or Core Data
- In-app purchases and subscriptions with StoreKit
- Accessibility with VoiceOver and Dynamic Type
What iOS App Development changes for your business
Feels like an iPhone app
Navigation, gestures and typography follow Apple's conventions, which users notice and reviewers expect.
Early access to new APIs
Native Swift code can adopt new iOS capabilities as soon as Apple ships them.
Fewer review surprises
Privacy, login and payment rules are addressed during development, before the build reaches App Review.
You own the account and code
Apps are published under your Apple Developer account, with source code and signing assets handed over once the project is paid in full.
Where it makes the biggest difference
Consumer subscription apps
Content, fitness or learning apps that sell subscriptions through StoreKit and need clean onboarding and restore-purchase flows.
iPad tools for teams
Sales catalogues, inspection checklists or point-of-service apps used on iPads, often offline, synced to a central system.
Apps that rely on Apple-only features
Widgets, Live Activities, HealthKit, Apple Wallet passes or deep Siri integration, where native code is the practical choice.
Companion to an existing Android app
A native iOS version that matches an Android app's features while respecting iOS conventions instead of copying Android screens.
From first sketch to the App Store
TestFlight builds arrive throughout development, so you review the app on your own iPhone, not in a slide deck.
Scope
Users, key journeys, supported iOS versions and devices, and a decision on native iOS versus Flutter.
Design
Screens designed to Apple's Human Interface Guidelines and prototyped for review on an iPhone.
Architecture
App structure, data and sync model, API contracts and the third-party SDK list, checked for privacy impact.
Build
Iterative development with regular TestFlight builds so feedback comes from a real device, not screenshots.
Test
Unit and UI tests, manual checks across supported devices and iOS versions, and accessibility review.
Submit
Metadata, privacy details and review notes prepared; the build is submitted and any reviewer questions answered.
Launch & monitor
Phased release, crash monitoring and fixes, then planning for the next iOS version.
What it connects to
iOS App Development
- REST and GraphQL APIs
- Apple Push Notification service
- Apple Pay and StoreKit
- Sign in with Apple
- Apple Maps and Google Maps
- Firebase services
- Odoo and ERP back ends
- Analytics and crash reporting SDKs
Built with
Security, quality and scale
Keychain storage
Tokens and credentials stored in the iOS Keychain, with biometric protection for sensitive actions.
App Transport Security
HTTPS-only networking enforced by App Transport Security, with certificate pinning where the risk warrants it.
Data protection
Files stored with iOS data protection classes so they are encrypted when the device is locked.
SDK review
Every third-party SDK checked for what it collects, so privacy manifests and App Privacy details stay accurate.
What working with us looks like
We build native and Flutter
If your app needs iOS and Android with the same features, we'll say so and show you what a single Flutter codebase would mean.
Review-aware from day one
We plan for login, payment and privacy rules during design so App Review is a checkpoint, not a surprise.
Full stack around the app
APIs, admin panels and Odoo or ERP connections can be built by the same team that builds the app.
Clean handover
App Store Connect access stays with you, and source code and documentation are handed over on final payment, so you aren't locked to one vendor.
What it costs
Fixed-price packages with the scope written down, paid stage by stage. Your project goes live once it's fully paid.
Related services, technologies and industries
Sources and further reading
Official documentation and guidance if you want to read more about this topic.
iOS App Development: questions we hear most
Do we need a Mac or an Apple Developer account?
You need an Apple Developer Program membership to publish on the App Store, but you do not need a Mac yourself. We build on our own Macs with Xcode; the membership should be in your company's name so you own the app listing.
Will Apple approve our app?
Nobody can guarantee App Store approval, because Apple reviews every submission itself. We reduce the risk by building to the App Store Review Guidelines, completing privacy details accurately, supplying demo access and responding to reviewer feedback if a build is rejected.
Should we build native iOS or use Flutter for both platforms?
Native iOS is the better choice when the app relies on Apple-specific features or you only need iPhone and iPad. If you need iOS and Android with the same functionality, Flutter usually lets one codebase serve both. We recommend after reviewing your feature list.
Can we sell subscriptions or digital content in the app?
Yes, but digital goods and subscriptions sold inside an iOS app generally must use Apple's in-app purchase system. Rules differ for physical goods, services delivered outside the app and some regions, so we confirm the correct payment approach for your model before building it.
How do we test the app before it is public?
We distribute test builds through TestFlight, Apple's beta testing service. Your team installs the TestFlight app, accepts an invite and receives each new build to try and give feedback on.
Which iOS versions will the app support?
We usually support the current iOS version and a small number of previous ones, based on your audience. Supporting older versions increases testing effort and can block use of newer APIs, so it is a decision we make together.
Next step
Plan your iPhone and iPad app
Share what the app should do and who will use it. We'll advise on native iOS or Flutter and what App Review will expect.