Native iOS · Swift · SwiftUI

iPhone apps, built the Apple way

We design and build native iOS apps in Swift and SwiftUI — fast, private and polished, with widgets, Apple Pay, HealthKit and everything else that makes an app feel at home on iPhone.

Native iOS development for products that need to feel right on iPhone.

TECHTARN is an iOS app development company working with startups and established businesses in the USA, UK, UAE, India, Canada, Australia and Singapore. Our iOS developers build in Swift and SwiftUI, following Apple's Human Interface Guidelines, so apps look, feel and perform like they belong on iPhone and iPad.

We handle the whole journey — discovery, UI/UX design, development, testing, App Store submission and support — and build the backend through our API and cloud teams. Need Android too? We build it natively in Kotlin or cross-platform with Flutter or React Native.

FEATURE TOUR

Scroll through what we build

Eight capabilities that make iOS apps feel native. The phone shows each one as you scroll.

01

SwiftUI interfaces

Smooth, native screens built with SwiftUI — with UIKit where it still fits best. Dark mode, Dynamic Type and VoiceOver support come built in.

  • SwiftUI and UIKit
  • Animations and gestures
  • Accessibility from day one
02

Widgets & Live Activities

Information on the Home Screen, Lock Screen and Dynamic Island, so users see what matters without opening the app.

  • WidgetKit
  • Live Activities and Dynamic Island
  • Interactive widgets
03

Apple Pay & in-app purchases

Fast checkout with Apple Pay, and subscriptions or one-time purchases through StoreKit.

  • Apple Pay
  • StoreKit subscriptions
  • Receipt and entitlement handling
04

HealthKit & Apple Watch

Read and write health and fitness data with the user's permission, with companion apps for Apple Watch.

  • HealthKit
  • watchOS companion apps
  • Privacy-first data handling
05

Push notifications

Timely, relevant notifications that bring users back — segmented, scheduled and measured.

  • APNs and rich notifications
  • Notification categories and actions
  • Deep links into the app
06

Offline & sync

Apps that keep working without signal and sync safely when the connection returns.

  • SwiftData or Core Data
  • CloudKit or your own API
  • Conflict handling
07

Maps & location

Store finders, delivery tracking and location-aware features with MapKit and Core Location.

  • MapKit
  • Geofencing
  • Battery-friendly location
08

On-device AI & AR

Image recognition, text analysis and augmented reality running on the device, for speed and privacy.

  • Core ML and Vision
  • ARKit and RealityKit
  • On-device processing
THE APPLE TOOLKIT

Frameworks we work with

A periodic table of the Apple technologies behind our apps.

SwSwiftLanguage
UISwiftUIInterface
UkUIKitInterface
Awasync/awaitConcurrency
CbCombineReactive
SdSwiftDataStorage
CdCore DataStorage
CkCloudKitSync
WkWidgetKitWidgets
AkActivityKitLive Activities
SkStoreKitPayments
HkHealthKitHealth
MkMapKitMaps
MlCore MLAI
ArARKitAR
PnAPNsPush
TfTestFlightBeta
XcXcode CloudCI/CD
FROM XCODE TO THE APP STORE

A calm, predictable release process

Every release follows the same five stations, so launches are never a surprise.

  1. 🛠️BuildCode review, automated tests and signed builds.
  2. 🧪TestFlightBeta testing with your team and real users.
  3. 📋App ReviewStore listing, privacy details and review guidelines checked before submission.
  4. 🚀Phased releaseRoll out gradually to catch problems early.
  5. 📈MonitorCrash reports, performance and analytics after launch.
DECISION HELPER

Native, Flutter or React Native?

Tick what matters for your app. The bars show which approach usually fits best — a starting point for our conversation, not a verdict.

Native Swift0

Choose native when iPhone users are your priority and you need the best performance and full access to Apple features.

You are here
Flutter0

Choose Flutter for one codebase on iOS and Android with a highly custom, consistent design.

Learn about Flutter →
React Native0

Choose React Native to share code across iOS and Android, especially if your team already uses React.

Learn about React Native →
ONE CODEBASE, MANY SCREENS

Across the Apple ecosystem

SwiftUI lets us share much of your app across Apple devices.

📱iPhoneYour core app, designed for every screen size.
📲iPadLayouts that use the larger screen, with split view and Apple Pencil.
⌚Apple WatchGlanceable companion apps and complications.
💻MacBring your app to Mac with Mac Catalyst or SwiftUI.
📺Apple TVBig-screen apps for streaming and media.
🥽Apple Vision ProSpatial experiences with visionOS.
WHAT WE BUILD

iOS apps for every kind of business

📱

Consumer apps

Polished apps for retail, food, travel and lifestyle brands.

🏥

Health & fitness

HealthKit, Apple Watch and privacy-first health apps.

💳

Fintech & banking

Secure apps with Face ID, Keychain and Apple Pay.

🛒

E-commerce

Fast shopping apps with Apple Pay and push campaigns.

🎓

Education

Learning apps with offline content and progress tracking.

🏢

Enterprise apps

Internal tools, field apps and device management support.

How we work

1Discover

Goals, users, features and a realistic plan and estimate.

2Design

Wireframes and UI that follow Apple's Human Interface Guidelines.

3Build

Two-week sprints with a working TestFlight build at the end of each.

4Test

Unit, UI and device testing, plus accessibility checks.

5Launch

App Store listing, review submission and phased release.

6Grow

Updates for new iOS versions, new features and support.

Every iOS project includes

  • Swift and SwiftUI codebase
  • Clean architecture (MVVM)
  • Unit and UI tests with XCTest
  • Accessibility (VoiceOver, Dynamic Type)
  • Crash reporting and analytics
  • TestFlight beta builds
  • App Store submission
  • Source code and documentation handover
  • Post-launch support options
FAQ

iOS development FAQs

Answers to the questions we hear most.

Q1Should I build native iOS or cross-platform?
Native Swift gives the best performance and full access to Apple features. Cross-platform (Flutter or React Native) shares one codebase with Android. Try the decision helper above.
Q2What is SwiftUI?
Apple's modern framework for building app interfaces in Swift. It is faster to develop with and works across iPhone, iPad, Mac, Watch and Vision Pro. We use UIKit where it still fits better.
Q3How long does it take to build an iOS app?
A focused first version often takes three to five months, depending on features, design and integrations. We agree a plan and milestones in the discovery phase.
Q4How much does an iOS app cost?
It depends on scope, design and backend needs. After a short discovery call we send a clear estimate. You can also try our free project estimator.
Q5Do you handle App Store submission?
Yes — store listing, screenshots, privacy details, review submission and responses to any reviewer questions.
Q6Who owns the source code?
You do. We hand over the full source code, documentation and access to all accounts.
Q7Can you build the backend too?
Yes — APIs, databases, admin panels and cloud hosting. See our API and cloud services.
Q8Do you support apps after launch?
Yes. We update apps for each new iOS release, fix issues and add features under a support plan. See software maintenance.
Q9Can you take over an existing iOS app?
Yes. We start with a code review, then fix urgent issues and plan improvements or a gradual move to SwiftUI.
Q10Can you build the Android version too?
Yes — natively in Kotlin, or with Flutter or React Native. See our Android development page.
Get In Touch

Ready to build your iOS app?

Tell us about your app idea, users and timeline. We'll send a free scope, tech recommendation and estimate — we reply within 4 business hours.

⏰
Response TimeWithin 4 business hours (your timezone)
Send Us a Message