Aegis Authenticator - 2FA App

6.19K reviews
Content rating
Everyone
500K+
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Content rating
Everyone
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About this app

Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens for your online services.

Compatibility
Aegis supports the HOTP and TOTP algorithms. These two algorithms are industry-standard and widely supported, making Aegis compatible with thousands of services. Any web service that supports Google Authenticator will also work with Aegis Authenticator.

Encryption and biometric unlock
All of your one-time passwords are stored in a vault. If you choose to set a password (highly recommended), the vault will be encrypted using strong cryptography. If someone with malicious intent gets a hold of the vault file, it’s impossible for them to retrieve the contents without knowing the password. Entering your password each time you need access to a one-time password can be cumbersome. Fortunately, you can also enable biometric unlock if your device has a biometrics sensor (i.e. fingerprint or face unlock).

Organization
Over time, you'll likely accumulate tens of entries in your vault. Aegis Authenticator has lots of organization options to make finding the one you need at a particular moment easier. Set a custom icon for an entry to make it easier to find. Search by account name or service name. Have a lot of one-time passwords? Add them to custom groups for easier access. Personal, Work and Social can each get their own group.

Backups
To make sure you will never lose access to your online accounts, Aegis Authenticator can create automatic backups of the vault to a location of your choosing. If your cloud provider supports the Storage Access Framework of Android (like Nextcloud does), it can even create automatic backups to the cloud. Creating manual exports of the vault is also supported.

Making the switch
To make the switch easier, Aegis Authenticator can import the entries of lots of other authenticators, including: Authenticator Plus, Authy, andOTP, FreeOTP, FreeOTP+, Google Authenticator, Microsoft Authenticator, Steam, TOTP Authenticator and WinAuth (root access is required for the apps that don't have an option to export).

Feature overview
• Free and open source
• Secure
 • Encrypted, can be unlocked with a password or biometrics
 • Screen capture prevention
 • Tap to reveal
• Compatible with Google Authenticator
• Supports industry standard algorithms: HOTP and TOTP
• Lots of ways to add new entries
 • Scan a QR code or an image of one
 • Enter details manually
 • Import from other popular authenticator apps
• Organization
 • Alphabetic/custom sorting
 • Custom or automatically generated icons
 • Group entries together
 • Advanced entry editing
 • Search by name/issuer
• Material design with multiple themes: Light, Dark, AMOLED
• Export (plaintext or encrypted)
• Automatic backups of the vault to a location of your choosing

Open source and license
Aegis Authenticator is open source and licensed under GPLv3. The source code is available here: https://github.com/beemdevelopment/Aegis
A secure 2-step authenticator to manage your one-time passwords
Updated on
Feb 24, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

6K reviews
Todd Hess
August 14, 2026
Nice try, but no way to backup to an external service except Google, which is random. So if you lose your phone, it gets stolen, or it quits, you lose access to your accounts. This is contrary to every best practice backup strategy in place for decades now. If you are that overly concerned with login security, go with hardware keys. They are much more secure and can be backed up easily.
1 person found this review helpful
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Beem Development
August 14, 2026
Thanks for the review, but backup to services other than Google is definitely possible. Any service that fully integrates with Android's Storage Access Framework is supported. One example is Nextcloud, but there are more. Then there's the option to integrate with Android's backups, which, indeed, usually backs up to Google depending on your device.
Darth Futuza
August 1, 2026
My only complaint is that they don't have a Windows/Linux/Mac Desktop version available. I've used it through 2 phones for about 50 different authentication services, and the only problem I've had is while I was waiting for a new phone to ship to me, I needed to run the app without a phone, installing an android emulator for that is a bit annoying.
3 people found this review helpful
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Meddle
April 3, 2021
Simple yet secure. Does everything you need it to do, without being bloated down by ads or unnecessary features. Best of all, you can back up your 2FA vault to an encrypted file, which you can also use to access your codes from another device if you wish to. That was exactly the functionality I had been looking for, so that my codes remain secure, yet still accessible from multiple devices just in case. UI design is very clean as well, and completely free. I definitely reccommend.
156 people found this review helpful
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What’s new

This version fixes the quick settings tile staying inactive permanently after upgrading to Android 16.

New features:
- Redesigned FAB menu
- Ability to import `otpauth` uri from clipboard

Fixed bugs:
- Quick settings tile staying inactive permanently
- Autofill services are now disabled in the 'Edit Entry' screen to prevent accidental overwriting of the master password
- Inverted positions of buttons in 'Select Group' dialog
- Redundant padding in the tiles view has been removed