PasswordBox Developer: PasswordBox Cost: Free for up to 25 passwords; $1 per month for more than 25. Available on Android too? Yes Do you struggle to keep track of all of those passwords you need to log in to webmail, social networks, bank accounts, various online subscriptions, etc? The more you need to remember, the more likely you are to either reuse them or rely on weak passwords. According to Deloitte, in 2013 more than 90% of user-generated passwords are vulnerable to hacking, even those considered strong by IT departments. If you create a weak password using PasswordBox, the app will warn you about it. PasswordBox stores your passwords, so you don't have to remember them or write them down. All you need to remember is one master password.