Simple Password Manager Simple Password Manager
the author of this app says:
Password Lock - A simple password manager which stores the username and passwords securely.
Your data is kept secure and confidential with 128-bit AES encryption. The data is stored on your device. The application access is controlled through a master password. The master password is equivalent to a pin number used for the debit/credit cards, so keep this safe. If you forgot this, you can still retrieve access to the application, but the data you have stored would be erased, this is to prevent anyone with malicious intent trying to gain access to the data.
Your data requires the master password to be unlocked, so you don't have to worry even if your device got into the wrong hands!