Mastering AppStorage in SwiftUI & iOS

Mastering AppStorage in SwiftUI & iOS

SwiftUI introduced the @AppStorage property wrapper with iOS 14, making it incredibly easy to store and retrieve small data values using UserDefaults. Whether you're building a welcome screen or saving user preferences, @AppStorage can help you cut down on boilerplate code and keep your UI reactive.

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Mastering AppStorage in SwiftUI & iOS

In this article, we will explore what @AppStorage is, how it compares to UserDefaults, and go through a few examples.

What is UserDefaults?

UserDefaults is Apple’s lightweight storage system for saving small bits of data. It’s perfect for values like:

• User onboarding state
• User-selected themes (light/dark mode)
• Default username or brand name
• Any small bit of app setting that needs to persist

Here’s what saving and retrieving a string using UserDefaults looks like:

UserDefaults.standard.set("DevTechie.com", forKey: "brand")
let storedBrand =…