Google Sync was a file synchronization service from Google that provided over-the-air synchronization of Gmail, Google Contacts, and Google Calendar with PC and mobile device Mail, Calendar and Address Book applications.

What does Google Sync do?

Now, if you sign in to Chrome using the same Google account from any other device such as a different computer or mobile phone (Android or iOS), your data will sync to that device too. Updating data on any of the devices will change it on other devices too. You will see the synced data across all your devices.

Should I turn sync on or off?

If you are using Enpass on multiple devices, then we recommend enabling sync to keep your database updated across all your devices. ... Also, you don't need to worry about the safety of your database as using sync is safe. Your cloud always contains a copy of the same encrypted data as on your device.