# ApplicationSettings Constraints on the apps and categories of apps a user can run on their device. ``` struct ApplicationSettings ``` ## Topics ### Blocking applications [`var blockedApplications: Set?`](/documentation/ManagedSettings/ApplicationSettings/blockedApplications-swift.property) A set of applications for the system to block. [`static let blockedApplications: SettingMetadata>`](/documentation/ManagedSettings/ApplicationSettings/blockedApplications-swift.type.property) A description of the setting that controls which apps a user can launch on their device. ### Preventing app installation and removal [`var denyAppInstallation: Bool?`](/documentation/ManagedSettings/ApplicationSettings/denyAppInstallation-swift.property) A Boolean value that indicates whether to prevent the user from installing applications. [`static let denyAppInstallation: SettingMetadata`](/documentation/ManagedSettings/ApplicationSettings/denyAppInstallation-swift.type.property) The metadata for the setting to prevent app installation. [`var denyAppRemoval: Bool?`](/documentation/ManagedSettings/ApplicationSettings/denyAppRemoval-swift.property) A Boolean value that indicates whether to prevent the user from removing applications. [`static let denyAppRemoval: SettingMetadata`](/documentation/ManagedSettings/ApplicationSettings/denyAppRemoval-swift.type.property) The metadata for the setting to prevent app removal. ## Relationships ### Conforms To [`ManagedSettingsGroup`](/documentation/ManagedSettings/ManagedSettingsGroup) --- 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)