With the rise of cyber threats, protecting passwords has become a basic necessity for anyone who uses the internet. It’s not enough to just create hard-to-guess combinations — it’s essential store them safely and use Two-factor authentication (2FA) whenever possible.

With this in mind, applications have emerged that work like temporary code generators and digital safes to store your credentials in encrypted form. The goal is to prevent attackers from accessing your accounts even if they discover your master password.

In this article, we will introduce two of the best free apps to protect passwords and manage two-factor authentication: the Google Authenticator and the Authy. Both are available for Android and iOS and can make all the difference to your online security.

Why use an authentication app?

Even if you have a strong password, it can be discovered through phishing, data breaches or social engineering. That's why experts recommend the so-called two-factor authentication. With it, in addition to the password, a second code is required that changes constantly and can only be accessed through an authenticator app.

These codes are called TOTP (Time-based One-Time Password), and only last a few seconds. Even if someone steals your password, they won't be able to log in without the second factor.

Additionally, some of these apps also function as encrypted password managers, centralizing and protecting the credentials you use on websites, social networks, banks and emails.

1. Google Authenticator – Simple, straightforward and efficient

O Google Authenticator is one of the most popular solutions for two-factor authentication. It was developed by Google itself, but it can be used on virtually any account that allows configuration with a TOTP key — such as Facebook, Instagram, Amazon, Microsoft, Binance, among many others.

How does Google Authenticator work?

After installing the app, you scan the QR Code provided by a platform (during the activation of two-step verification). From then on, the app starts generating temporary codes every 30 seconds, and these codes will be requested every time you log in to that account.

Main advantages:

• Free and ad-free
• Simple and lightweight interface
• Compatible with hundreds of services
• Generate TOTP codes even offline
• Quick integration with Google accounts

How to configure?

1. Enable two-factor authentication on your accounts (in security settings).
2. Choose the “authenticator app” option.
3. Use Google Authenticator to scan the QR Code.
4. Save the generated temporary code and you're done.

Although it does not offer cloud backup, it is a great option for those who value simplicity and privacy.

2. Authy – Security with backup and sync

O Authy is another well-known authenticator app, with an important difference: has encrypted backup and synchronization between devices, allowing you to recover your codes even if you lose your phone.

This is particularly useful for those who use many different services and don't want to lose everything when switching devices.

What makes Authy special?

In addition to generating TOTP codes like Google Authenticator, Authy offers extra features that make the user's life easier:

• Password encrypted backup
• Synchronization between multiple devices (mobile phone, tablet, PC)
• Offline support for code generation
• Password or biometric protection
• Modern and well-organized interface

You can even install Authy on your computer and maintain security even when your phone is not nearby.

How to use?

1. Download the app and register your phone number.
2. Enable two-factor authentication on the desired services.
3. Scan the QR Code within Authy.
4. Enable encrypted backup with a recovery password.

This multi-device backup and access feature makes Authy ideal for who manages many accounts or need access on different devices.

Which app to choose?

The choice between Google Authenticator It is Authy depends on your usage profile.

• If you want an option simple, no sync or backup, Google Authenticator works perfectly.
• If you prefer to have security with flexibility, including backups, synchronization and use across multiple devices, Authy will be more complete.

It is worth noting that both applications are free, reliable, and work with practically all services that support TOTP.

Extra tips for protecting your passwords

In addition to using authenticator apps, other security practices also help avoid problems:

• Do not repeat passwords between different services.
• Use long and complex passwords, with letters, numbers and symbols.
• Avoid saving passwords in your browser or notepad.
• Enable two-step authentication whenever possible.
• Do not click on suspicious links received via email or social media.

Conclusion

In times of data leaks and online scams, protecting your passwords is an essential attitude. With the help of apps like Google Authenticator and the Authy, you add an extra layer of security that can prevent major losses.

Both are free, safe and compatible with Android and iOS. If you don't use one yet, now is the time to take the first step towards more secure browsing.

Download it now, set up your accounts and have peace of mind when browsing, working or using your social networks. In the end, Your digital security starts with your passwords.