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iOS developmentiOS App Development

Build your mobile app for iOS and Android, or for iPhone only. App369 builds native iOS applications with Swift and SwiftUI for iPhone, iPad and Apple Watch, or cross-platform with Flutter when you also need Android.

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A smartphone and a smartwatch on a dark grid floor, showing a simple app layout
Fiverr
5.0 · 126 reviews
Own product
Workspace369
Fixed-price offers from
$450

What we build

iOS Development Services

01

Native Swift Development

High-performance iOS applications built with Swift 5 and modern Apple frameworks. Swift is Apple's official language that delivers C-level performance with memory safety. We build apps that fully leverage Apple's hardware capabilities including Face ID, LiDAR, and the Neural Engine.

02

SwiftUI Interfaces

Declarative UI development with SwiftUI for faster iteration and pixel-perfect interfaces. SwiftUI provides live previews in Xcode, adaptive layouts that work across iPhone, iPad, and Apple Watch, and built-in accessibility support.

03

App Store Optimization

Our ASO strategies maximize your app's visibility through keyword optimization, compelling screenshots, A/B tested descriptions, and review management to drive organic downloads.

04

Apple Watch Apps

Companion and standalone watchOS applications built with SwiftUI and WatchKit. We leverage health sensors, complications, and notifications to extend your app experience to the wrist, reaching the 100+ million Apple Watch users worldwide.

05

iPad & Universal Apps

Optimized iPad experiences that take advantage of larger screens with multi-column layouts, drag and drop, Apple Pencil support, and Stage Manager compatibility. Universal apps that adapt automatically across all Apple device sizes.

06

App Clips

Lightweight App Clips under 15MB that let users experience your app instantly without downloading. Triggered via NFC tags, QR codes, or Safari, App Clips drive conversions by lowering the barrier to engagement with your full app.

How it works

Our process

  1. Discovery & Planning

    We analyze your business requirements, target audience, and iOS-specific opportunities like Apple Watch, iPad, and App Clips to create a comprehensive development plan with wireframes and architecture decisions.

  2. UI/UX Design

    Simon designs interfaces following Apple's Human Interface Guidelines in Figma, leveraging iOS-native patterns like tab bars, navigation controllers, and SF Symbols for an intuitive experience.

  3. Swift Development

    Our iOS developers build your app using Swift, SwiftUI, and UIKit with clean MVVM architecture. We integrate Apple frameworks like Core Data, CloudKit, and HealthKit as needed.

  4. Testing & QA

    Rigorous testing using XCTest for unit and UI tests, TestFlight for beta distribution, and manual QA across iPhone and iPad device sizes to ensure flawless performance and accessibility.

  5. App Store Submission

    We prepare all App Store assets, write ASO-optimized descriptions, configure App Store Connect metadata, and manage the Apple review process to ensure successful first-submission approval.

  6. Maintenance & Updates

    Ongoing support including iOS version compatibility updates, security patches, performance optimization, App Store Connect analytics review, and feature enhancements.

Technologies

  • Swift
  • SwiftUI
  • Xcode
  • Core Data
  • CloudKit
  • TestFlight

Questions

Frequently asked questions

How much does it cost to develop an iOS app?

Cost depends on scope, platforms and integrations. Our rates are published on the fee structure page, and the free app cost calculator gives a range for an iOS app with every assumption listed. We send a fixed quote after reviewing your brief.

How long does it take to develop an iOS app?

Simple apps take 2-3 months, medium-complexity apps with CloudKit integration and push notifications require 3-6 months, and complex enterprise applications with custom frameworks and advanced features can take 6-12 months. Apple's annual iOS updates also require compatibility testing, which App369 includes in the development timeline.

Should I choose Swift or Flutter for my iOS app?

Choose Swift if your app is iOS-only and requires advanced Apple-specific features like ARKit, HealthKit, or CarPlay. App369 specializes in both approaches and can recommend the best fit during a consultation ($100 per 15 minutes, paid upfront).

What is the App Store submission process?

App369 handles this entire process, ensuring compliance with Apple's Human Interface Guidelines and App Store Review Guidelines.

How much does iOS app maintenance cost?

App369 provides maintenance packages that include CI/CD pipeline management, automated testing, and Firebase Crashlytics monitoring.

What are Apple developer account requirements?

Organizations require a D-U-N-S Number from Dun & Bradstreet.

Start here

Reach iPhone and iPad Users

iOS users generate the highest in-app revenue of any mobile platform. Whether you need a native Swift app or a cross-platform Flutter solution, get a detailed estimate by email, usually within one business day, or book a consultation ($100 per 15 minutes, paid upfront).

Get in touch View pricing

Fiverr reviews / 95 on app work

What buyers said about this kind of work

All 126 reviews
  • “I can't say enough about Simon. He took my idea and gave me an amazing app. This App was not simple it was full of complicated math and has an amazing map and calculator feature... I can't wait to continue to develop more apps with Simon. the possibilities are endless. Thank you Simon”
    A buyer in the United States, December 2020. App development on Fiverr
  • “This seller was great. He was very attentive to all our requests, and helped with suggestions of his own. We got our app up and running very quickly with all the features we asked for. Very quick to respond to our communications and even got done ahead of the timeline. Would happily work with him again.”
    A buyer in the United States, November 2020. App development on Fiverr
  • “I am so happy that this app finally came to life. Szymon’s work was outstanding and professional. He was prepared with solutions for problems I had and even did more than I asked for. I already hired Szymon for more projects and am excited for the future.”
    A buyer in the United States, October 2020. App development on Fiverr

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