Cost: The mobile app is free, but it requires a desktop/laptop counterpart ($49.99) to actually work.
Available on iOS too? Yes
1Password gives you an easy way to stop reusing passwords. The app saves your online user names and passwords, as well as sensitive information, such as bank account and credit card numbers. Your data is then locked behind either a strong password or a PIN. The app requires a desktop version, and once the desktop app is in place, data can then be synched to mobile devices through Dropbox.