Compare & Sync Folders
Compare & Sync Folders is a macOS file comparison and synchronization app for keeping two folders aligned across local, external, or network storage.
What is Compare & Sync Folders?
Compare & Sync Folders is a macOS utility for comparing folders and synchronizing their contents. It is designed for people who maintain backups, mirror working folders, or keep files consistent between a Mac, external drives, network shares, and some cloud-backed folders. The app supports multiple synchronization and comparison modes, so users can choose one-way backup, mirroring, or bidirectional sync depending on the workflow. A preview step lets you review detected differences and adjust planned file actions before changes are made. It also includes filters, conflict-handling options, and logging, which can be useful when working with large collections of files or recurring sync jobs. Greenworldsoft offers it as a native Mac app focused on folder management rather than general cloud storage.
Key features
- Compare two folders and detect missing, changed, or matching files
- Synchronize folders with one-way, mirror, and bidirectional sync modes
- Preview file operations before syncing and adjust actions when needed
- Filter files and folders to include or exclude specific items from a sync job
- Compare file contents with QuickLook or line-by-line review before copying
- Sync multiple folder pairs during the same session
- Copy selected differing items to a third folder for backup or review
- Keep logs of synchronization activity and save or load app settings
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Mostly safe
This app needs access to the folders you choose so it can compare, copy, and update files, which is normal for synchronization software. The main practical risk is accidental overwriting, deletion propagation, or copying the wrong version when using two-way sync or aggressive sync rules. Review the preview carefully before running a job, especially when syncing important documents, external drives, or shared folders. If you use any option that saves deleted items to a separate folder, keep enough free storage available.
Recommendation: Keep Compare & Sync Folders if you actively use it for backups, folder mirroring, or file comparison on your Mac. If you no longer use it, removing it is usually reasonable, but do so only after confirming you do not rely on its saved sync setups or logs for ongoing workflows. Before major sync jobs, test with a small folder pair or use preview mode to confirm the expected result.
Common paths
/Applications/Compare & Sync Folders.app
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