Authenticator by mymindstorm

4.5 Stars out of 5

Authenticator only collects data you provide, such as when you scan a QR code to add an account or change a setting.
Authenticator stores all data locally using the storage services provided by your browser. Technical information on how Authenticator stores account data is available here.
If you have signed into Firefox your account data may be synced with your Firefox Account. You can disable this by either going to the Storage & Backup menu and changing the Storage Location setting to local or by disabling extension data sync in Firefox. Consult the privacy policy for the Firefox Sync service for more information.
If you login to any 3rd party service under the Storage & Backup menu Authenticator will begin to routinely upload your account data to that service. You can stop this by going to the Storage & Backup menu, clicking the name of the service you signed into, and clicking Logout. Consult the privacy policies of these services for information about how they handle your data.