The Password Manager stores encrypted passwords in your phone and nowhere else. The app does not have internet access. It's guaranteed that the app will not transmit any passwords out of the phone. The app uses a master password from the user to encrypt other passwords. The master password is not stored in the phone. Therefore, the encrypted passwords are safe even someone else has access to the phone. The app provides functions such as search, copy to clipboard, add, delete to manage your passwords. The app uses Argon2 and AES to generate the key and encrypt the passwords. Argon2 is the winner of the Password Hashing Competition and is optimized to reduce the possibility of time–memory trade-off (TMTO) and side-channel attacks. AES is a symmetric block cipher chosen by the U.S. government to protect classified information. AES is implemented in software and hardware throughout the world to encrypt sensitive data. It's very difficult if not impossible to crack Argon2 or AES through brute-force as long as the master password from the user is appropriate.