# AppStorage A property wrapper type that reflects a value from `UserDefaults` and invalidates a view on a change in value in that user default. ``` @frozen @propertyWrapper struct AppStorage ``` ## Topics ### Storing a value [`init(wrappedValue:_:store:)`](/documentation/SwiftUI/AppStorage/init(wrappedValue:_:store:)) Creates a property that can save and restore tab sidebar customizations. [`init(_:store:)`](/documentation/SwiftUI/AppStorage/init(_:store:)) Creates a property that can read and write an Optional boolean user default. ### Getting the value [`wrappedValue`](/documentation/SwiftUI/AppStorage/wrappedValue) [`projectedValue`](/documentation/SwiftUI/AppStorage/projectedValue) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)