One Key - Offline Password Manager is a free, ad-free, and backup/restore capable password manager that allows you to store all your passwords encrypted in one place on your Android device. It offers a simple and safe way to manage all your passwords without requiring internet access. It is equipped with the strongest encryption using the AES-256 bit algorithm. The app also allows you to customize categories and fields, auto-fill all passwords, and export/import CSV files. One Key - Offline Password Manager also has a dark theme, which is easy on the eyes.

One Key - Offline Password Manager provides additional features like virtual cards generation based on information, password strength indicator, and password generator feature to help you choose strong passwords. It also has a recycle bin to restore or permanently erase all deleted passwords. The app is equipped with different colored card types for convenience, beautiful animations, and a block screenshot feature to increase security.

The app requires permissions to run at startup to enable auto-backup on device restart, storage to securely store all passwords on your device, and Google play license check for in-app purchases. Overall, One Key - Offline Password Manager is a reliable and secure option to manage all your passwords offline.