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Free, interactive interview practice. Attempt each question first, then read a current answer with code.

Course · 192 questions

iOS interview questions

Free iOS interview practice: predict the output, spot the bug or pick the fix, then read a current answer with code for Swift 6.2, SwiftUI and iOS 26. No sign-up.

Concurrency 17
SwiftUI 22
Swift language 23
Memory & ARC 7
UIKit 13
Networking 11
Combine 12
Persistence 10
Architecture & patterns 9
Testing 8
Security 7
Performance 10
Platform & distribution 18
Modern platform 9
Accessibility & localization 6
System design scenarios 10

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What's new: 31 Oct 2026: Course launch