taFileSync is an application for synchronizing two directory trees on the local file system. It can for example be used to synchronize the storage card with an OTG (on-the-go) USB stick or to make a backup of the internal to the external storage card.

The app has following features:
* 1-way and 2-way sync
* unlimited number of sync jobs
* preview of differences
* time offset handling
* update source timestamp (e.g. when no rights to update target timestamps under Android KitKat)
* compare by content
* compare by ignoring timestamps (when mirroring by content)
* show differences in text files (needs the app taTextDiff)

On Android 4.4.x (KitKat) you should use a time offset of 1000 because KitKat adjusts the timestamps on external SDcards to even seconds.

There is a PRO app (taFileSync PRO), which activates additional functionality:
* list of directories to be excluded
* more than 1 time offset can be ignored
* Job log files
* Jobs can be run automatically (e.g. with Tasker)
* SEND Intent for adhoc directory compare (e.g. with Total Commander)
* VIEW Intent for .json files to pass data to the app

For more details see the online version of the built-in help file:

Support forum:


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Marian Adrian

by Marian Adrian