iOS Interview Questions

Check out 30 of the most common iOS interview questions and take an AI-powered practice interview

SwiftSwiftUIUIKitCore DataXcode
30+
Questions
12
Basic
13
Intermediate
5
Advanced
Q1

What is iOS and why is it popular?

BasicFundamentals
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Q2

What are the key features and advantages of iOS?

BasicCore Features
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Q3

How do you set up a iOS development environment?

BasicSetup & Configuration
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Q4

What are variables and data types in iOS?

BasicBasic Concepts
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Q5

How do you handle functions and methods in iOS?

BasicFunctions & Methods
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Q6

Explain control flow statements in iOS

BasicControl Flow
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Q7

What are the basic operators in iOS?

BasicOperators
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Q8

How do you handle input/output in iOS?

BasicInput/Output
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Q9

What is the standard library/built-in functions in iOS?

BasicStandard Library
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Q10

How do you debug iOS code?

BasicDebugging
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Q11

What are comments and documentation in iOS?

BasicDocumentation
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Q12

How do you handle basic error scenarios in iOS?

BasicError Handling
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Q13

Explain object-oriented programming in iOS

IntermediateObject-Oriented Programming
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Q14

How does iOS handle memory management?

IntermediateMemory Management
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Q15

What are design patterns commonly used in iOS?

IntermediateDesign Patterns
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Q16

How do you handle asynchronous programming in iOS?

IntermediateAsynchronous Programming
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Q17

What are modules/packages in iOS?

IntermediateModules & Packages
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Q18

How do you handle file operations in iOS?

IntermediateFile Operations
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Q19

What is exception handling in iOS?

IntermediateException Handling
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Q20

How do you work with databases in iOS?

IntermediateDatabase Integration
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Q21

What are decorators/annotations in iOS?

IntermediateDecorators & Metadata
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Q22

How do you implement data structures in iOS?

IntermediateData Structures
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Q23

What is multithreading/concurrency in iOS?

IntermediateConcurrency
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Q24

How do you optimize iOS code performance?

IntermediatePerformance
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Q25

What are best practices for iOS development?

IntermediateBest Practices
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Q26

How do you implement advanced algorithms in iOS?

AdvancedAlgorithms
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Q27

What are metaprogramming concepts in iOS?

AdvancedMetaprogramming
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Q28

How do you optimize memory usage in iOS?

AdvancedMemory Management
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Q29

What is reflection in iOS?

AdvancedReflection
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Q30

How do you implement custom data structures in iOS?

AdvancedCustom Extensions
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Companies Hiring iOS

Google
Amazon
Microsoft
Meta
Netflix
Uber
PayPal
LinkedIn
Spotify
Airbnb

Salary Insights

Average in India
₹8-28 LPA

Frequently Asked Questions

What is iOS used for?

iOS is widely used for various development tasks. It's valued for its performance, reliability, and extensive ecosystem.

How long does it take to learn iOS?

Learning iOS basics typically takes 1-3 months of dedicated study. Achieving proficiency requires 6-12 months of practice and real-world projects. Mastery comes with years of experience and continuous learning.

What are the job prospects for iOS developers?

iOS developers are in high demand across industries. With strong iOS skills, you can pursue roles in software development, system architecture, with competitive salaries ranging from ₹8-28 LPA.

What prerequisites are needed for learning iOS?

General programming knowledge are helpful prerequisites for learning iOS.

Which companies use iOS?

Major companies using iOS include Google, Amazon, Microsoft, Meta, Netflix, and many more. iOS is adopted across startups to enterprise organizations.

Introduction

Preparing for mobile development interviews with iOS? Mobile apps are essential for reaching users in today's digital landscape.

iOS enables developers to build high-quality mobile applications efficiently. Understanding its architecture, UI patterns, and platform-specific considerations is key.

This guide covers iOS interview questions about app architecture, state management, performance optimization, and deployment.

These questions will help you demonstrate expertise in building smooth, responsive mobile applications.