What's the difference between Sticky Password Free and Premium?

Sticky Password Premium allows you to use all the great features of Sticky Password Free PLUS you have the option to synchronize your data across all your Sticky Password installations on different platforms (Windows, OS X, Android, iOS) and you have access to secure storage to back up your encrypted database using our cloud storage services. Sticky Password Free is great for individuals who access their passwords and form filling data from a single device.