FolderMirror: Local Backup

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About this app

FolderMirror copies the folders you choose to another folder, an SD card or a USB drive, and keeps every copy safe. Your source is only read, and nothing in the destination is ever overwritten, renamed or deleted.

• Preview each backup first: new, changed, unchanged and skipped files plus the amount of data to copy
• Changed files are saved as a new dated version next to the older copy
• Each copy is read back and checked against the original before it counts as done
• Stop any time; the next run continues where it left off
• Skip hidden files, chosen file types such as tmp or log, and files above a size limit
• Run backups daily or weekly in the background
• See each run in the history with copied files, new versions and a clear reason for any failure, and share a text report

A backup pair can hold up to 5,000 files; split very large folders into several pairs.
Back up folders to an SD card, USB drive or another folder, never overwriting
Updated on
Oct 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • This app may collect these data types
    Device or other IDs
  • Data is encrypted in transit

What’s new

First release.