What's the best Android app for generating secure two-factor authentication codes?

Authenticator App is a dependable solution for Android users seeking to bolster account security through two-factor authentication. It specializes in generating time-based one-time passwords (TOTP) that sync with services like Gmail, Facebook, and banking platforms. Key features include the ability to add accounts quickly via QR code scans, support for numerous profiles in one interface, and offline functionality that ensures code access without an internet connection. In real-world use, such as when logging into a work email or accessing financial apps, the app delivers codes that refresh every 30 seconds, reducing the risk of unauthorized access. Users report that the straightforward layout and consistent performance make it ideal for daily security needs. However, some reviews note the absence of built-in cloud backup, which could complicate device transitions. Despite this limitation, regular updates from Starnest JSC address security patches, and the app remains a practical choice for those prioritizing ease and reliability in their 2FA setup.