2FA Apps Compared: Authy, 2FAS, Google Authenticator & More

Why Use a Dedicated 2FA App?

While many services offer SMS-based 2FA, dedicated authenticator apps are generally more secure. They generate codes offline, making them resistant to SIM-swapping attacks.

The Top Contenders

1. Google Authenticator

The original, simple, and reliable choice. It works offline and supports TOTP (Time-based One-Time Passwords).

• Pros: Simple UI, works offline, supports export feature.
• Cons: Lacks Apple Watch support, cloud backup is relatively new and tied to Google account.

2. Authy

Authy is known for its robust multi-device sync and encrypted cloud backups. It also offers an Apple Watch app.

• Pros: Great multi-device sync, Apple Watch app, cloud backups.
• Cons: Requires phone number, closed ecosystem (hard to export secrets).

3. 2FAS

A rising star in the 2FA app space, 2FAS focuses on privacy and flexibility.

• Pros: Open source, supports multiple backup options (including encrypted local backups), Apple Watch app, no phone number required.
• Cons: Newer than others, so potentially less battle-tested.

Choosing Your App

If you prioritize data portability and openness, Google Authenticator with GAuth Exporter is an excellent choice. It gives you access to your codes wherever you need them.

If you need seamless multi-device sync and an Apple Watch app, and don't mind being tied to Authy's ecosystem, it's also a strong contender.

Conclusion

Ultimately, the best 2FA app is the one you will consistently use. Ensure you have a reliable backup strategy, no matter which app you choose.