Android only: We all have sensitive, yet hard-to-remember data that we want to take with us. Android app Wallet stores anything you could need in a secure, password-protected app and syncs it across devices.
Whether you need somewhere to write down your combination locks, frequent flyer numbers, serial numbers or other notes, Wallet has got you covered. It comes with a number of pre-created groups for storing popular sensitive information, but you can also add your own group for anything you could possibly want to store.
On the security side, Wallet's thought out how to keep your data private. All your data is encrypted, accessible via a master password. When the screen times out, Wallet closes itself off and clears the clipboard so no one can access it accidentally. Your master password is also stored as an SHA-512 hash, so it isn't stored locally on the device. You can sync all your data via Dropbox, over an SSL-encrypted connection so that even if your Dropbox account were compromised, your data would still be inaccessible without your master password.
Wallet is a free download for Android devices. You can also grab an ad-free version for $0.71.