The Best Authenticator App for Free! Protect your accounts by adding 2-factor authentication (2FA)! Are you looking for a reliable and easy-to-use Authenticator App? 2FA Authenticator App is the best choice for you. It is a super simple authenticator app that is very easy to use and works completely offline. 2FA Authenticator supports adding 2-step authentication for most types of online accounts today such as Google, Microsoft, Facebook, Instagram, Twitter, Amazon, Dropbox, LinkedIn, GitHub, ... How it works? - 2FA Authenticator uses the same time-based one-time password (TOTP) algorithms. When you sign in the one-time password (OTP) is generated by the app. The one-time passwords (OTP codes) have a 30 second timer counting down. The one-time password (OTP) doesn’t require you to be connected to a network. Why Choose the 2FA Authenticator - Easily add a new account, just scan the QR code - Support a lot of popular services - Works offline - Completely free Permission require: Camera: Needed to add accounts using QR codes