Your download has started

Installing takes about two minutes

1. 1

   Open the download

   Open Mantel.dmg from your Downloads folder, then drag Mantel into Applications.

2. 2

   Open Mantel from Applications

   The first time, macOS will stop you with a message like this. Don’t worry, this is expected. Mantel isn’t on the App Store yet, so Apple hasn’t checked it. Nothing is wrong with your Mac or the app.

   “Mantel” Not Opened

   Apple could not verify “Mantel” is free of malware that may harm your Mac or compromise your privacy.

   Move to TrashDone

   Click Done (not Move to Trash).

3. 3

   Allow it in Privacy & Security

   Open System Settings → Privacy & Security, scroll to the bottom, and click Open Anyway next to “Mantel was blocked”. Enter your Mac password, then click Open Anyway once more.

   Prefer Terminal, or don’t see the button? Open the Terminal app (press ⌘ Space, type “Terminal”), paste this, and press Return:

   xattr -dr com.apple.quarantine /Applications/Mantel.app Copy
4. 4

   Let Mantel set up your screensaver

   Sign in, then follow the app’s steps. It installs the screensaver for you and opens the right page in System Settings. If macOS blocks the screensaver too, the app shows a button for it. Or paste this into Terminal:

   xattr -dr com.apple.quarantine ~/Library/Screen\ Savers/Mantel.saver Copy
5. 5

   Pick Mantel as your screensaver

   In System Settings → Screen Saver, scroll to Other and choose Mantel. Set when it starts under Lock Screen → “Start Screen Saver when inactive”.