Clamshell

Action when clamshell closes

Free

Initiate actions when clamshell state changes Clamshell is a tiny app that can run following actions when the clamshell (laptop lid) is closed: ‣ Sleep ‣ Shut Down ‣ Turn Off Displays & Prevent Idle Sleep ‣ Keep External Displays On & Prevent Idle Sleep Sleep causes an immediate system sleep when your MacBook closes. It is very useful for users who use MacBook with external displays connected. When your MacBook connected to the power, Sleep will turn off a built-in display and all external displays, and the system will enter an idle sleep mode. If there are processes that hold assertions to prevent idle sleep, the system will wait before sleep with turned off displays while these processes are running. When your MacBook runs on battery, Sleep mimics the system default behavior. Shut Down initiates swift and unavoidable system shutdown when the lid of your MacBook closes. No questions asked. This mode is useful, if you work on MacBook in the unsafe public places, such as parks, cafes, bus stations, etc. Mac will shut down automatically when lid closes, preventing anyone to bypass password protection with Touch ID/ Face ID, and preventing some advanced hacking techniques, such as cold boot attack, dumping RAM and circumventing FileVault. This mode also helpful, if your MacBook awakes often in your backpack. Turn Off Displays & Prevent Idle Sleep puts all displays in the sleep mode and creates a power assertion preventing the rest of the system entering an idle sleep. This mode is useful for users who use MacBook with external displays connected. When you close the lid of your Mac connected to the power, a built-in display and all external displays go black but running applications remain working in the background, such as Music keeps playing, Safari keeps downloading big file, etc. When your MacBook runs on battery, Turn Off Displays & Prevent Idle Sleep works the same, i.e. mandatory sleep on lid close prevented. Keep External Displays On & Prevent Idle Sleep creates two power assertions preventing external displays and the rest of the system entering an idle sleep. If some display is off, this action turns it on. You can enable sharing states of all your Macs with iPhones and iPads that are signed in to the same iCloud account, and where the Clamshell app is installed. To do this, select the "Sharing Settings..." option in the Clamshell macOS app running on your Mac and enable "iCloud". Sharing is disabled by default. You should enable it by hand on all your Macs that you want to monitor remotely. After that, you will be able to control sharing settings from iOS versions of the Clamshell app. Clamshell now supports sharing the laptop lid statuses and system statuses (Awake, Sleeping, Logging out, Restarting, Shutting down, Restarted, Shut Down, User Logged Out, App Terminated). More statuses will come in the year. No data is shared with third-party providers. Clamshell is not using any external servers but only Apple's iCloud servers. You're in full control of your data! Note for users of iMac, Mac mini, Mac Studio, and Mac Pro: Clamshell is useful for you finally! Use it to monitor statuses of your Mac desktops remotely from iPhone/iPad. Yay! Please stay tuned for updates. More actions to come.

  • 4.6
    out of 5
    10 Ratings

Fixes a regression with "Keep External Displays On & Prevent Idle Sleep" and "Turn Off Displays and Prevent Idle Sleep" actions when the MacBook is not connected to the external power.

The developer, Alexander Kovrazhkin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Alexander Kovrazhkin
    Size
    • 2.4 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 18.4 or later.
    • iPhone
      Requires iOS 18.4 or later.
    • iPad
      Requires iPadOS 18.4 or later.
    • Mac
      Requires macOS 14.0 or later.
    • Apple Vision
      Requires visionOS 2.4 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2024-2026 Alexander Kovrazhkin. All rights reserved.