SuperDuper!
SuperDuper! is a macOS backup and disk-cloning utility from Shirt Pocket for creating bootable copies of Mac volumes.
What is SuperDuper!?
SuperDuper! is a macOS utility for backup, disk cloning, and system recovery. It is published by Shirt Pocket and created by Bruce Lacey. The app is best known for making full copies of Mac volumes, including bootable backups when supported by the target macOS and hardware configuration. Its documented features include scheduled backups, Smart Update for faster incremental refreshes of an existing clone, sandbox-style testing workflows, and customizable copy scripts. Mac users commonly encounter it when setting up a recovery drive, migrating to a new disk, or maintaining a second copy of a system alongside Time Machine. Because it works directly with backup destinations and volume contents, it has broad access to user data involved in the copy process and should be used carefully with the correct source and destination settings.
Key features
- Creates full disk clones and bootable backups for supported Mac setups
- Schedules backup jobs for recurring protection
- Uses Smart Update to refresh an existing clone without recopying everything
- Supports copy scripts for customized backup behavior
- Can store a bootable backup alongside Time Machine data on another volume
- Provides sandbox-style workflows for testing changes on a cloned system
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Safety overview
Status: Mostly safe
SuperDuper! is a legitimate backup utility, but it works with entire volumes and large amounts of user data. Incorrect source or destination choices can overwrite files or erase a target backup disk.
Recommendation: Keep it if you use it for backups, cloning, recovery preparation, or migration. Remove it if you no longer use SuperDuper! and have confirmed you do not need its saved schedules or backup settings.
Common paths
/Applications/SuperDuper!.app
Support paths
~/Library/Application Support/SuperDuper!
Preference paths
~/Library/Preferences/com.blacey.SuperDuper.plist
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