The log files have unique names, so there should be no potential for losing any information due to conflicts between files. Your logs, as well as the statistics based on them, will now be available across all your machines. You need to repeat this procedure on every Mac on which you want Vitamin-R logs to sync. All new log files will be written to this location. Vitamin-R will then try to create a new Vitamin-R folder within your existing Dropbox folder and move all your log files into this folder. Vitamin-R 3 ⇒ Preferences ⇒ Cloud Sync ⇒ Activate Dropbox Synching

We strongly recommend installing your Dropbox folder to the standard location suggested by the installer. You will need to have a Dropbox account and the Dropbox application installed on your Mac before you can activate the syncing feature. If you don’t have a Dropbox account already, you can, at the time of this writing, sign up for a free 2 Gb account at: Please note that Vitamin-R for iPhone is now discontinued and syncing with the Mac version is likely to stop working Vitamin-R is able to synchronize logs between several Macs using the Dropbox file synchronization service.

Dropbox Synchronization – Vitamin-R 3 Help Pages - Dropbox Synchronization

Dropbox for mac syncing