OTP-Auth is a free iPhone application developed by 浩 王. It falls under the category of Utilities & Tools and serves as a simple and secure two-step authentication password generation tool. With OTP-Auth, users can generate one-time passwords on their mobile phones, supporting both TOTP and HOTP authentication methods to enhance account security.

This application offers several key features to ensure a secure authentication process. Users have the option to hide the generated codes, adding an extra layer of protection. Additionally, OTP-Auth allows for simultaneous clicks, making it easy to copy the generated codes to the clipboard for quick access. One of its notable advantages is the ability to generate verification codes without an internet connection, providing convenience even in offline scenarios. Users can add their accounts to the app either by scanning a QR code or manually entering the necessary information.

To further enhance account security, OTP-Auth requires a second step of verification when signing in with 2-Step Verification enabled. This means that in addition to entering the password, users will need to enter the verification code generated by the app on their phone. This additional layer of security helps protect against unauthorized access.

It is worth noting that OTP-Auth requires permissions for accessing the album and camera to scan QR codes when adding an OTP key. These permissions are necessary for a seamless user experience.