Create an iOS App: Build Your First App In 1 Hour

Create your first iOS app with Xcode, download it from the Mac App Store, and run your SwiftUI project in the iOS simulator to view Hello World.

Explore the Xcode interface, including the toolbar with run and stop, device simulator, views library, project navigator, and preferences to customize themes and fonts.

Explore how to use SwiftUI vertical stacks to arrange a tip calculator UI, including changing images, text, and currency symbols with live previews.

Master h stacks in SwiftUI to create horizontal layouts inside v stacks, placing images and text left to right, and use embed in code actions to adjust views.

Modify swift ui object attributes to customize appearance in code or via the attributes inspector; adjust image scale, foreground color, and text font and weight with live canvas updates.

Learn how to use variables in swift ui: create a named value, store a default 100, and update the tip calculator display by referencing the variable without quotes.

Learn how to add a SwiftUI text field that binds to a state variable, uses a placeholder amount, and updates the total as the user types.

Add a SwiftUI slider to set the tip percent, binding it to a state variable and displaying the value with string interpolation. Set range 1 to 30 with 1.0 steps.

Convert the bill amount from a string to a double, apply the tip percent as a decimal, and display the tip amount with two decimals in a text view.

Use if/else statements in Swift to safely unwrap optionals, convert input to a double, and render either the total or a numeric value prompt when conversion fails.

Apply your iOS app icon in Xcode by dragging a 1024 by 1024 PNG into the asset catalog; note no transparency and square corners, then test in the simulator.