Based on our record, Authenticator seems to be more popular. It has been mentiond 4 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
PS. At the moment I’m using this one. It’s really good but it’s missing an export feature. Source: over 2 years ago
For iOS? Authenticator - it's open-source and about as simple as it gets. Source: over 2 years ago
For iOS offline, you could go with Tofu or Authenticator. These are open-source alternatives. Source: over 2 years ago
2FA: This is a necessity for all online accounts nowadays, but it is important to store your TOTP codes somewhere trusted and secure. Services like Authy are cloud-based and proprietary, meaning that no one can verify their privacy and security claims. Cloud-based applications are risky as it is, and it is best to keep your codes somewhere local on your devices, such as Aegis for Android, or Authenticator for iOS.... Source: over 3 years ago
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
OTP Auth - The app for calculating one-time-passwords on iPhone and iPad.
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
andOTP - andOTP is a two-factor authentication App for Android 4.4+
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
TOTP Authenticator - TOTP Authenticator app makes it easier to setup and manage your 2-factor authentication accounts and tokens. The app allows you to add extra security to your accounts and protects them from hijacking. Available for iOS and Android.