Hakan Sevimoğlu Hakan SevimoğluFreelance Developer · 18 yrs
Swift & SwiftUI

iOS App Development: App Store-Ready Apps Built with Swift and SwiftUI

I build native iPhone and iPad apps with Swift and SwiftUI and manage the App Store publishing and review process from start to finish.

Quick answeriOS app development is the process of building, testing and publishing native iPhone and iPad apps on the App Store using Swift/SwiftUI. Hakan Sevimoğlu is an iOS developer who has built iOS apps including Ezan Vakti, live on the App Store, as well as the Kassa mobile POS and the Inspectra quality-control app; he is experienced with CoreML, Vision and HealthKit integrations.

Written by Hakan Sevimoğlu · Last updated:

Hakan Sevimoğlu – freelance full stack developer and Apple iOS & Android app developer in Izmir, Turkey: Android & iOS, PHP/Laravel, Windows, API integrations, embedded systems, e-commerce and SEO
Hakan Sevimoğlu — Apple iOS & Android developer, IzmirNative iOS apps with Swift/SwiftUI, Android and hybrid apps; PHP/Laravel backends, API and payment integrations, embedded systems. Based in Izmir, working on site and remotely across Turkey and Europe.

Why native iOS?

Native SwiftUI apps get full access to the camera, sensors, notifications and on-device AI, deliver smooth performance and stay compliant with App Store guidelines. For field and sales apps that must work offline, SwiftData provides a reliable data layer.

At launch, I handle App Store Connect setup, screenshots, privacy disclosures and review feedback; your app is published under your own developer account.

iOS app development by city

I work remotely across Turkey, with on-site meetings and setup in these cities: iOS app development in Istanbul, iOS app development in Izmir, iOS app development in Ankara, iOS app development in Bursa, iOS app development in Antalya.

What I offer

  • SwiftUI interfaces

    Modern, accessible native screens with dark mode support.

  • Offline-first data

    Apps that work without internet using SwiftData / CoreData.

  • On-device AI

    Camera-based detection and classification with CoreML and Vision.

  • HealthKit & sensors

    AVFoundation, Accelerate and HealthKit integrations.

  • Subscriptions & notifications

    In-app purchases with StoreKit, plus push notifications.

  • App Store launch

    Review process, metadata and release management included.

Technologies I use

SwiftSwiftUISwiftDataCoreMLVisionAVFoundationHealthKitStoreKitXcodeTestFlight

Official documentation and resources

Standards and official documentation I follow in projects:

Example projects

A selection of live projects serving real users.

How we work

  1. Free intro call

    We clarify needs, existing systems and goals together.

  2. Quote & roadmap

    Scope, technology, timeline and budget within 24 hours.

  3. Staged development

    Weekly demos and a live test environment.

  4. Launch & support

    Go-live, training and ongoing maintenance.

Free pre-analysisThe first meeting and roadmap are completely free, with no obligation.

Staged delivery and approvalYou review each module on a test environment before we move on.

Written scope and rightsScope, delivery and source code rights are defined in the contract.

Frequently asked questions

How long does it take to build an iOS app?

An MVP-scope iOS app usually takes 4–8 weeks; backend and integration needs determine the timeline.

Should I choose native or cross-platform?

If you need the camera, sensors, AI or high performance, native Swift/SwiftUI is the right choice. For simple content apps, a PWA is also worth considering.

How does App Store approval work?

The app is tested via TestFlight and then submitted for review. If it is rejected, the required fixes are made until it is approved.

Whose account is the app published under?

Usually your own Apple Developer account; I help with setting up and configuring the account.

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