What's the best iOS app for adding an extra layer of security to my online accounts?

Google Authenticator is an excellent iOS app for enhancing the security of your online accounts through two-factor authentication. It generates time-based codes that you use in addition to your password when logging in. This means that even if someone knows your password, they won't be able to access your account without the code from your phone. The app supports multiple accounts, so you can use it to protect all your important logins in one place. Users appreciate its simplicity and reliability, with one reviewer stating, "This Software is extremely reliable, Safe, and optimal!" It's a straightforward way to add a significant layer of protection against unauthorized access, giving you peace of mind knowing your accounts are more secure. The app is also easy to manage, allowing you to add and remove accounts as needed, and even use multiple accounts for the same app within one authenticator.