Copy only what changes
Copy new files and content that needs updating. Verify each copy before finalizing the destination file.
macOS
EasyFileSync
Simple, safe file sync backup
Sync backup important files to removable storage or between folders on your computer. Review the changes, then confirm the run.
Explore the features
CORE VALUES
Keep your file copies usable
Keep backed-up files
Removing a source file does not automatically delete the copy already saved at the destination.
Preserve both when files conflict
Keep an externally edited destination file and save the source content as a separate copy.
Ordinary files, ready to open
Keep familiar folders and ordinary file formats that remain accessible without proprietary software.
Offline sync backup
Sync backup requires no account or internet connection. File names, paths, and contents are not uploaded.
PRODUCT SCREENS
Know what happens at each run
PREVIEW
Review changes before running
Review new, modified, conflicting, and source-deleted items. The preview does not change files; sync backup starts only after confirmation.
EXCLUSIONS
Adjust exclusions when needed
Known system metadata and app temporary files are excluded by default. Adjust name, extension, or hidden-file rules; user hidden files are included by default.
PAUSED
Pause, resume, or safely cancel
Pause during a run and resume when ready. You can also review the current state and cancel safely.
REPORT
See the result and what needs attention
Reports show copied, skipped, conflicting, and failed items. If an issue occurs, review the data status and suggested next steps.
Screens show version 0.1.0 with local destination folders. The paused screen comes from a separate run. Sample capacity and speed figures are not performance guarantees.
HOW IT WORKS
Three steps to sync backup
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Select source folders
Choose the local folders containing the documents or projects you want to back up.
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Choose a destination folder
Select a folder on your computer or on connected removable storage.
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Review the preview and confirm
Check file changes and required free space, then manually start sync backup.
EVERYDAY USE
For everyday documents and projects
Keep another copy of work documents
Manually save work documents to removable storage at regular intervals, keeping a copy you can open when needed.
Organize copies by project
Create a task for each project, keep another local copy, and review recent results in one place.
Save important personal files
Keep photos and personal records in familiar folders. The files remain accessible without EasyFileSync.
Two folders on the same physical disk do not protect against failure of that disk. Keep important data on separate removable storage as well, and check your copies regularly.
PRODUCT INFORMATION
System requirements
- Sales status
- The TOKUNAGA STORE product page is published. Sales and public downloads are still in preparation; purchasing is not yet available.
- System requirements
- macOS 13 or later, Apple Silicon (M-series)
- Interface languages
- Simplified Chinese, Japanese, English
- Sync backup scope
- Local source folders to a local destination or removable storage; manual and one-way incremental.
- Supported platforms
- macOS only. Windows and Intel Macs are not supported.
- Final design, testing, and operation
- TOKUNAGA Co., Ltd.
FAQ
Frequently asked questions
Does deleting a source file also delete its destination copy?
No. Files already backed up remain at the destination; source deletions are not mirrored.
What if another app edits a destination file?
The externally edited destination file is preserved, and the source content is saved as a separate copy. Conflicts are shown in the preview and report.
Do I need special software to open the saved files?
No. The destination contains ordinary files and folders that you can open directly with Finder or your usual apps.
Does offline sync backup mean the app never connects to the internet?
Sync backup itself works offline and does not upload file names, paths, or contents. This does not mean the entire app always stays offline; features such as software updates may require a connection.
Does it support scheduling or bidirectional sync?
The current product provides manual, one-way incremental sync backup. It does not offer automatic scheduling, bidirectional sync, version history, or encryption.
SUPPORT
Product questions
For product questions, contact TOKUNAGA Co., Ltd. through the existing contact page or by email.