iOS App Development

Native iOS apps built with Swift, SwiftUI, and UIKit—secure, high-performance, and App Store–ready. I specialize in building iOS applications for startups, enterprises, and product teams across banking, retail, fitness, and outdoor recreation. With 12+ years of iOS development experience, I deliver production-grade apps that scale.

My approach focuses on clean architecture (MVVM, VIPER, Clean Architecture), testable code, and robust error handling. I build apps that handle offline scenarios gracefully, sync seamlessly, and provide excellent user experiences on iPhone and iPad.

What I Deliver

  • Swift & SwiftUI native apps with modern patterns
  • Offline-first with local storage & sync (CoreData, Realm)
  • Push notifications, deep links, universal links
  • RESTful & GraphQL API integration
  • Crash monitoring & performance optimization
  • App Store signing, provisioning, compliance
  • TestFlight beta distribution & launch support

Best For

  • New iOS app builds (MVP to enterprise-grade)
  • Feature delivery for existing apps
  • UIKit → SwiftUI migration & modernization
  • Performance & stability hardening
  • App Store readiness & compliance fixes
  • Architecture refactoring for scale

Problems I Solve

Crashes & Instability

Reduce crash rates with defensive coding, proper error handling, memory management, and crash monitoring (Firebase Crashlytics, Sentry).

Slow Performance

Optimize startup time, scrolling performance, and network calls. Profile with Instruments (Time Profiler, Allocations) and apply lazy loading, caching, and background processing.

App Store Rejections

Handle compliance issues (privacy, permissions, data handling), signing/provisioning errors, and guideline violations. Guide you through review process.

Technical Debt & Refactoring

Modernize legacy UIKit codebases, introduce clean architecture patterns, improve testability, and reduce coupling for easier feature delivery.

Tech Stack & Approach

Languages & Frameworks

  • Swift, SwiftUI, UIKit
  • Combine, async/await
  • CoreData, Realm, SQLite
  • Alamofire, URLSession
  • Firebase (Auth, Analytics, Crashlytics)

Architecture & Patterns

  • MVVM, VIPER, Clean Architecture
  • SOLID principles & dependency injection
  • Repository pattern for data layer
  • Coordinator pattern for navigation
  • Unit & UI testing (XCTest, Quick/Nimble)

Typical Outcomes

  • 30-50% crash reduction through defensive coding & proper error handling
  • 2-3x faster feature delivery with modular architecture & testable code
  • 50-200ms faster app startup via lazy loading & optimized initialization
  • App Store approval on first submission with compliance-ready code & documentation
  • 95%+ test coverage for business logic & critical paths

Delivery Process

  1. Discovery & Planning: Requirements gathering, architecture design, tech stack selection, timeline estimation
  2. Development Sprints: Iterative builds with weekly demos, Jira/Linear tracking, Git flow with PR reviews
  3. QA & Hardening: Unit tests, UI tests, manual QA, performance profiling, crash monitoring setup
  4. App Store Prep: Signing, provisioning, compliance review, TestFlight beta, submission support
  5. Launch & Handoff: Production release, monitoring dashboards, documentation, team training

Frequently Asked Questions

What's included in iOS app development?

Full lifecycle delivery: architecture design, Swift/SwiftUI implementation, API integration, offline sync, push notifications, crash monitoring, App Store prep (signing, provisioning, compliance), TestFlight beta distribution, and launch support.

How long does it take to build an iOS app?

MVPs: 4-8 weeks. Standard features: 10-16 weeks. Enterprise-grade apps with complex integrations: 4-6 months. Timeline depends on scope, design complexity, and third-party integrations.

Can you modernize an existing UIKit app to SwiftUI?

Yes—I perform incremental SwiftUI migrations for UIKit codebases. This includes migration planning, hybrid UIKit/SwiftUI architecture, gradual screen conversion, and team training.

Ready to build your iOS app?