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iOS Development Internship

Build iPhone apps with Swift and SwiftUI: views, navigation, networking, persistence, testing and App Store preparation.

SwiftSwiftUIXcodeSwiftDataTestFlight

What you'll work on

Full syllabus: all 60 graded tasks

These are the actual tasks the internship portal assigns for this domain. You submit each one with proof (a GitHub link or document) and a mentor reviews it.

Level 1: Foundations (24 tasks)
  1. Set up Xcode or a Swift playground. Install Xcode (or Swift Playgrounds / an online Swift compiler if you have no Mac) and run your first Swift program. Note your setup in a repo named ios-internship.
  2. Swift basics. Write examples of let/var, optionals, if let, guard, structs, enums and closures.
  3. Collections and functions. Use arrays, dictionaries and sets with map, filter and reduce to solve 5 small problems.
  4. Structs vs classes. Explain value vs reference types with code that proves the difference.
  5. Protocols. Define a protocol, make two types conform, and use it through a protocol type.
  6. First SwiftUI view. Build a profile screen in SwiftUI with VStack, HStack, Image, Text and Button.
  7. State in SwiftUI. Build a counter and a form using @State and @Binding.
  8. Lists and navigation. Show a List of items and open a detail screen with NavigationStack.
  9. Layout and modifiers. Recreate a real app's settings screen using spacing, padding, frames and modifiers.
  10. Assets and dark mode. Add app icons, colours and images to the asset catalogue with dark mode variants.
  11. Error handling. Use throws, do/try/catch and Result in a small parsing example.
  12. Swift Package Manager. Add one Swift package dependency to a project and use it.
  13. Swift generics. Write a generic stack and a generic function with constraints.
  14. Extensions. Add useful extensions to String, Date and Array and test them.
  15. Enums with associated values. Model network results and screen states with enums.
  16. SwiftUI forms. Build a settings form with toggles, pickers and steppers.
  17. Sheets and alerts. Present sheets, full-screen covers and alerts in the right situations.
  18. Custom view modifiers. Write reusable view modifiers for card style and error banners.
  19. SF Symbols. Use SF Symbols with rendering modes and variable colours.
  20. Animations. Add implicit and explicit animations and a matched geometry effect.
  21. Previews. Write previews for light, dark, large text and different devices.
  22. Git for Xcode projects. Set up a .gitignore for Xcode and explain project file merge conflicts.
  23. Localisation. Localise your app into an Indian language with a String Catalog.
  24. App icon and launch screen. Add an app icon and a launch screen.
Level 2: Building real features (20 tasks)
  1. MVVM with ObservableObject. Move screen logic into a view model using @Observable or ObservableObject.
  2. Networking with URLSession. Load JSON from a public API with async/await and Codable, with loading and error states.
  3. Images from the network. Load remote images with AsyncImage, with placeholder and failure views.
  4. Persistence. Save favourites with SwiftData or Core Data and show them on a separate tab.
  5. User settings. Store preferences with @AppStorage and apply them across the app.
  6. Tab bar app. Organise the app into three tabs with their own navigation.
  7. Concurrency. Load two API calls in parallel with async let and explain actors and the main thread.
  8. Unit tests. Write XCTest or Swift Testing tests for your view model and model parsing.
  9. Permissions. Request photo library or location permission with a clear usage description.
  10. Firebase or Sign in with Apple. Add sign-in with Firebase Authentication or Sign in with Apple.
  11. Search and filtering. Add searchable lists with scopes and tokens.
  12. Pagination. Load more items as the user scrolls a list.
  13. Camera and photos. Pick and display photos with PhotosPicker.
  14. MapKit. Show places on a map with annotations and user location.
  15. Combine or async sequences. Debounce search input with Combine or AsyncSequence.
  16. Dependency injection. Inject services into view models with protocols for testing.
  17. Keychain. Store a login token securely in the Keychain.
  18. Error handling UI. Show friendly network, server and empty states.
  19. Analytics and crash reports. Add Firebase Analytics and Crashlytics (or a similar free tool).
  20. Deep links. Open a specific screen from a URL scheme or universal link.
Level 3: Professional work and capstone (16 tasks)
  1. Offline support. Cache API data locally and show it when the network is off.
  2. UI tests. Write XCUITest tests for your main user flow.
  3. Performance with Instruments. Profile the app with Instruments, fix a slow view or memory issue and record the result.
  4. Accessibility. Support Dynamic Type and VoiceOver labels, and test with VoiceOver on.
  5. Push notifications. Set up local notifications (and remote ones if you have a developer account) that open the right screen.
  6. Widgets. Build a home screen widget with WidgetKit showing data from your app.
  7. Release preparation. Prepare an archive for TestFlight: signing, version numbers, privacy manifest and screenshots.
  8. Capstone: complete iOS app. Ship a complete SwiftUI app (API, persistence, sign-in, tests, accessibility) with a README, screenshots and demo video.
  9. Background tasks. Refresh data in the background with BackgroundTasks.
  10. Swift Concurrency in depth. Use task groups, cancellation and MainActor correctly in a real feature.
  11. App Intents and Shortcuts. Expose an app action to Siri and Shortcuts with App Intents.
  12. iPad and multitasking. Make your app adapt to iPad with NavigationSplitView.
  13. Privacy. Write a privacy manifest and App Store privacy labels for your app.
  14. Performance. Fix list scrolling or image memory issues found with Instruments.
  15. App Store listing. Prepare screenshots, description, keywords and review notes.
  16. Capstone 2: app for a real user. Build an iOS app for a real user's need, test it with them through TestFlight (or on device) and document their feedback and your changes.

Real software work, not just training

Every iOS Development task is reviewed by our team and saved to your portfolio. Interns who pass the readiness check can take real work from Training Trains, W3AppDevelopers and DomainHostly projects on the Company Work board.

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Frequently asked questions

Do I need experience to join the iOS Development internship?+

A Mac is best for Xcode. Without one you can start the Swift language tasks in Swift Playgrounds or an online compiler.

What will I do in the iOS Development internship?+

You complete 60 graded tasks in three levels: foundations, real features, and professional work. Each task is submitted with GitHub or document proof and reviewed. The final capstone is: Capstone 2: app for a real user.

Do I get a certificate for the iOS Development internship?+

Yes. After your required tasks are approved, your attendance is above 75% and you pass the proctored final exam, you get a graded completion certificate that anyone can verify at trainingtrains.com/verify.

Can I do the iOS Development internship online?+

Yes. You can do it fully online from home, or offline at our Erode and Perundurai branches. Tasks, quizzes and mentor reviews are the same in both modes.

Available both online (work from home) and offline at our Erode and Perundurai branches - see the full internship program details for departments, duration, and the application process.

Apply for the iOS Development internship