🎯 The most comprehensive iOS interview preparation resource with 110+ real interview questions, detailed answers, and production-ready Swift code examples.
A complete guide for iOS developers preparing for interviews at Apple, Google, Meta, Amazon, and top tech companies. Master Swift programming, UIKit, SwiftUI, architecture patterns, concurrency, and advanced iOS development topics.
📖 Read Online | ⭐ Star This Repo | 🐛 Report Issue
- Introduction - Why prepare, how to prepare effectively, interview levels and patterns
- 📋 Interview Questions Index - Quick reference to all 110+ interview questions
- iOS Basics - iOS ecosystem, app lifecycle, UIViewController lifecycle, and core components
- Swift Programming - Swift language fundamentals, optionals, closures, error handling, and ARC
- OOP and Protocol-Oriented Programming - Object-oriented and protocol-oriented programming concepts in Swift
- UIKit Development - Storyboards, Auto Layout, TableView, CollectionView, and accessibility
- SwiftUI - Declarative UI, state management, navigation, and animations
- Data Persistence - UserDefaults, Keychain, Core Data, SQLite, and Realm
- Networking - URLSession, REST APIs, Codable, Combine, and third-party libraries
- Multithreading and Concurrency - GCD, OperationQueue, async/await, and concurrency best practices
- Architecture and Design Patterns - MVC, MVVM, VIPER, SOLID principles, and clean architecture
- Dependency Management - Swift Package Manager, CocoaPods, Carthage, and XCFrameworks
- Memory Management and Performance - ARC deep dive, retain cycles, memory leaks, and optimization
- Testing - Unit testing, UI testing, TDD, BDD, and test doubles
- Advanced Topics - Combine framework, app extensions, push notifications, and deep linking
- Security - Secure coding practices, SSL pinning, and certificate validation
- App Distribution & In-App Purchase - Certificates, provisioning profiles, App Store deployment, and IAP implementation
- For Beginners: Start with Introduction → iOS Basics → Swift Programming → UIKit Development
- For Mid-level Developers: Focus on Architecture, Design Patterns, Networking, and Data Persistence
- For Senior/Lead Roles: Deep dive into Advanced Topics, Security, Performance Optimization, and Testing
- Interview Prep: Read the relevant topic, understand the theory, practice the examples, and prepare answers
- Theory with Examples: Every concept explained with practical Swift code examples
- 110+ Interview Q&A: Each topic includes 5-7 comprehensive interview questions with detailed answers
- Interview-Focused: Real questions asked by Apple, Google, Meta, and other top companies
- Real-World Scenarios: Practical use cases from production apps
Focus on: iOS Basics, Swift Programming, UIKit Development, Basic Data Persistence
Focus on: Architecture Patterns, Networking, SwiftUI, Multithreading, Testing
Focus on: Design Patterns, Memory Management, Performance, Security, Advanced Topics, App Distribution
Focus on: Clean Architecture, SOLID Principles, Dependency Management, System Design
✅ 110+ Real Interview Questions - Actual questions from top companies
✅ Production-Ready Code - Examples from real-world iOS applications
✅ Constantly Updated - Latest iOS 17 features and Swift 5.9+ syntax
✅ Interview-Focused Answers - Formatted specifically for interview responses
✅ All Experience Levels - From entry-level to senior architect positions
✅ Free & Open Source - Community-driven, always free
- 15 Comprehensive Topics
- 110+ Interview Questions & Answers
- 500+ Code Examples
- iOS 13 to iOS 17+ Coverage
- Swift 5.9+ Compatible
- Covers UIKit & SwiftUI
- New to iOS? Start with Introduction → iOS Basics
- Interview Tomorrow? Go to 📋 Top 20 Questions
- Specific Topic? Use Table of Contents
- Want All Questions? Check Complete Questions Index
We welcome contributions from the community! See CONTRIBUTING.md for guidelines.
- ⭐ Star this repository
- 🐛 Report bugs or issues
- 💡 Suggest new questions or topics
- 📝 Improve documentation
- 🔧 Fix typos or errors
- 🎉 Share with fellow iOS developers
This project is licensed under the MIT License - see the LICENSE file for details.
Mukund Jogi - Engineering Lead & Mobile App Specialist
- 🌐 Portfolio: mukundjogi-portfolio.vercel.app
- 💼 LinkedIn: linkedin.com/in/mukund-jogi
- 🐙 GitHub: github.com/mukundjogi
- 💬 1:1 Mentorship: topmate.io/mukundjogi
- 🌐 Website: https://github.com/mukundjogi/ios-interview
- 📦 GitHub: https://github.com/mukundjogi/ios-interview
- 💬 Discussions: GitHub Discussions
- 🐛 Issues: Report Issues
If this guide helped you, please:
- ⭐ Star this repository
- 🔀 Fork for your own reference
- 📢 Share on LinkedIn, Twitter, Reddit
- 💬 Recommend to fellow iOS developers
ios swift interview-questions ios-development swift-programming uikit swiftui ios-interview mobile-development interview-preparation coding-interview tech-interview apple-interview ios-developer swift-interview architecture-patterns design-patterns concurrency memory-management testing
Created with ❤️ for iOS developers preparing for interviews at product companies, service companies, and startups worldwide.
Happy Learning! 🍎