After my Twitter account got hacked because I was using simple passwords, I did some research into this kind of app. Now I use this together with the Windows desktop app, and it does exactly what I want it to: store and protect my information. It lets me use wildly complex passwords I could never otherwise remember, and it generates them for me. I now use a different password for every site! That means even if one gets hacked, I dont have to worry about others being made vulnerable. Its worth the $5, and after using the Windows version with it for about a week Ive decided thats worth buying, too.