iOS Question Bank

iOS remains one of the most influential platforms in the mobile ecosystem, boasting over a billion active users worldwide. Apple continues to drive innovation from the rise of Swift as the primary development language to the introduction of cutting-edge frameworks like SwiftUI, Combine, and ARKit etc. As the platform matures, the demand for talented iOS developers grows. Staying updated with the latest technological advancements is no longer optional; it is essential for success in interviews and career growth.

This book is structured into three chapters according to experience. Most of the questions are designed in a way that gives you a quick reference before your actual interview and actually become your hand guide before the interview. Most of the questions are based on day-to-day tasks done by developers using skills they use daily.

This book is a short companion and reference guide meant to help you improve your understanding of Swift, current frameworks, and problem-solving abilities. On completing, you will feel more confident, capable, and prepared to handle your next iOS interview with comfort and clarity.

WHAT YOU WILL LEARN
● Master Swift basics and essential iOS development concepts.
● Practice applying architectural problem-solving skills in real-world production apps.
● Gain more conceptual knowledge on networking, concurrency, and debugging.
● Prepare for intermediate to advanced iOS interviews with challenging questions.
● Deepen your understanding of system design, scalability, and performance optimization.

WHO THIS BOOK IS FOR
This quick reference guide is perfect for iOS developers, Swift programmers, and mobile tech professionals who want a last-minute refresher before interviews. It covers unexpected questions and key concepts you might not have encountered, helping you walk in prepared and confident.

1. Beginner Level Questions
2. Intermediate Level Questions
3. Advanced Level Questions

Balraj Verma is a passionate iOS developer who has been building mobile apps since the very first Apple SDK. Over the years, he has worked on more than 60 apps across industries like augmented reality, telematics, banking, healthcare, and telecom — many of which have millions of users worldwide. Today, he works as a lead consultant at a well-respected firm, and working on projects from concept to scale.

Along the way, he also served as a technical editor for a published book on Swift, sharpening his eye for detail and best practices. Driven by a love for sharing knowledge, he contributes regularly to Medium and Stack Overflow, where he writes about iOS development and passes on lessons from his own journey.