No specific info about version 3.4. Please visit the main page of Backup and Sync on Mac Informer.
Info updated on:
File synchronization feature for Mozy users.
Safely backs up files from your computer, camera, and SD cards in the cloud.
In order to make a backup, "Touchwriter Sync" software is required.
Make copies of your data by synchronizing two folders.
Simple and fast backup software.