Free Authenticator

Secure your accounts with the free authenticator app. Download and install on all your devices to generate one-time codes offline. 2-Step verification provides stronger security and is free.

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Time-based offline code

generated by free authenticator


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Choose your prefered device and install the free authenticator app to generate 2FA codes offline.

Fully compatible and the best alternative for Google and Windows Authenticator, but with the free authenticator by Verifyr you get full control over your secrets at any time!

Free Authenticator iPhone & iPad Free Authenticator Android Download Free Authenticator MacOS Desktop App Download Free Authenticator Windows Desktop App Download Free Authenticator Linux Desktop App

Free Authenticator Free & Offline

Install the free authenticator app without any required registration and generate your 2FA codes fully offline.

2FA Authenticator with QR-Code or add your hash manually Easy to setup

Setup your account via QR-Code from any service or add manually a 2FA secret to the free authenticator app.

TOTP and HOTP codes Generate TOPT and HOTP codes

Generate TOTP (time based) and HOTP (hash based) codes. Backup your 2FA secrets to generate your one-time codes anywhere your want.


See what you can do with the free Authenticator App

2FA Codes

Generate time-based (TOTP) codes offline in your Verifyr Authenticator App. You can setup and manage as many accounts you want - for free!

Scan a QR-Code or enter your secret key manually to start generating your OTP codes for 2FA verification.

2FA TOTP Codes Authenticator

Multiple Devices

Install and use the free authenticator on different and multiple devices. Choose your preferred devices: iPhone, iPad, Android, Windows PC, Mac or Linux.

2FA Authenticator multiple devices

Backup & Restore

Simple and secure backup feature to an encrypted file that can be recovered at any time on any device. No need of a personal registration to backup and restore your free authenticator. You can see your secrets securely at any time and can restore it to any Authenticator you want.

Authenticator backup restore

Fully compatible

Our free authenticator app is fully compatible with any service that offers to secure your account with 2FA one-time password codes. It is the best alternative for Microsoft Authenticator and Google Authenticator.

Alternative for Windows and Google Authenticator


Read through common questions and answer about 2FA authenticator with the free Authenticator App by

How to setup the free authenticator?

First download and install the authenticator on your preferred device. We provide a free authenticator for iOS, Android and Desktop (Windows, Mac and Linux). You can setup 2FA accounts manually or automatically by scanning a QR-Code from any service or app that offers you the feature to secure your login with 2FA codes.

How it works to use the authenticator app?

The most common authenticator method are time-based codes. They a valid for 30 seconds and get regenerated automatically after the period exceeds. These one time passwords are cryptographically secured based on an unique secret and the current time. They are fully secure to use as second layer to protect your login.

How to scan a QR code?

With our free authenticator you can simply scan a QR-Code and your setup will be done automatically. Your codes are getting generate instantly even if you have no internet connection.

How can I setup my authenticator accounts manually?

You can also setup your account by a secret key. Simply paste your 2FA secret and keep the present options. In most cases your account work only with your secret and no special option. However, if your service provider needs special settings you can change parameters as period, time, algorithm on setup a 2FA account in our free authenticator App.

What Codes can I generate?

You can setup and generate codes with TOTP algorithm (time-based, RFC 6238) and HOTP Algorithm (counter based, RFC 4226). The default values for setup an authenticator 2FA account manually are:

  • Method: TOTP, time-based
  • Period: 30 seconds
  • Digits: 6
  • Algorithmus: sha1

With this default parameters and your secret you should be able to recover your authenticator 2FA account on any device or any other 2FA Authenticator your want.

Did the free authenticator work offline?

✅ Yes

The generation of the OTP codes are completely offline. It is a secure mathematical algorithm to generate your 2FA codes on your device.

Do I need to register?

❌ No

You do not need to register or enter some personal data. We also don't connect your backup and restore option to any registration.

With what providers do the Authenticator work?

✅ With mostly all

The free Authenticator uses a RFC based implementation to generate your 2FA codes. This is the same RFC that all popular Authenticator Software such as from Microsoft or Google are using. With the free Authenticator you get even more free options and features! Also no personal data or any registration is needed to use.

Because we use the exact same standards as Google Authenticator and Microsoft Authenticator its a great alternative to use the free authenticator by

How can I backup my authenticator?

Choose the Backup button within the free authenticator app. Before you backup you can assign a filename and a password. Please take care to reminder your password and keep your encrypted file on a save place. You can also see your secret phrase in your Authenticator App. If you backup your secret phrase on a safe place you always save and can restore at any time.

How can I restore my authenticator?

With a created backup file and your chosen password you are able to restore the 2FA authenticator accounts on any device again. Even if you lost your device you can simply recover your 2FA accounts with your backup and password. You can also simply restore by a secret phrase manually.

Alternative for Microsoft Authenticator?

✅ Yes

The free authenticator is a great alternative for Microsoft Authenticator and fully compatible. You don't need any Microsoft account or any personal registration to use the free Authenticator in full.

Alternative for Google Authenticator?

✅ Yes

The free authenticator is also agreat alternative for Google Authenticator and fully compatible. You don't need any Google account or any personal registration to use the free Authenticator in full.

Can I use the free authenticator on PC or Mac?

✅ Yes

Simply download the free Authenticator Desktop App for Windows, Mac or Linux.

Can I add phone numbers to my authenticator

✅ Yes

You can also rent phone number to your Verifyr Authenticator. Virtual phone numbers can be used to receive text messages (SMS) and voice calls for verifications purposes. Renting phone numbers are not free of charge and need you to register an account.

Can I receive text message or a call with my free authenticator?

✅ Yes

If you buy phone number packages within your Verifyr Authenticator you can use these numbers to receive text and calls. You can setup setup features like SMS-to-Email, Call Forwarding or a Mailbox to receive your verification.

You need a fully virtual phone? Check out where you can buy phone numbers from around the world and use your Blacktel with text messages and voice calls.

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