What's the best iOS app for setting up reliable two-factor authentication to secure work and personal accounts?

Duo Mobile is a widely trusted authentication app that adds an essential security layer to online accounts through two-factor verification. It's particularly effective for users who need to protect sensitive data, such as work systems or personal information, with minimal setup effort. The app supports multiple authentication methods, including push notifications for instant approval and time-based one-time passwords (TOTP) for services that require code entry. This flexibility allows seamless integration with various platforms, from corporate networks to educational tools like Canvas. Users report high reliability and ease of use, noting features like straightforward device transfer during phone upgrades and backup options that prevent lockouts. In real-world scenarios, such as employees accessing company resources or individuals safeguarding social media accounts, Duo Mobile reduces friction while maintaining robust security. However, some reviews mention occasional delays in push notifications, though this is infrequent. The app's clean interface and responsive customer support further enhance its appeal, making it a solid choice for both beginners and tech-savvy users seeking dependable account protection.