Grammarly 2FA: how to set up an authenticator app

Your Grammarly account holds your writing preferences, saved documents and subscription. Grammarly calls its 2FA "two-step verification", and it's optional. Paid plans can pick text messages or a third-party authenticator app. On the free plan or a free trial, the authenticator app is the only option (Grammarly). This guide uses Authenticator App - Novaz on iPhone, but any authenticator app works the same way.

Since October 2025, the company behind Grammarly has been called Superhuman (Grammarly). A Grammarly account also signs you in to Superhuman, with the same two-step verification (Grammarly). Accounts created as Superhuman accounts can't use two-step verification yet (Grammarly), so this guide covers Grammarly accounts.

How we checked this guide: the Grammarly steps come from Grammarly's own help center, linked below, which we read on October 20, 2026. We haven't tested them on a Grammarly account. Grammarly's pages don't all name the settings tab the same way, so a label may differ slightly. The Novaz steps are checked against the app, version 1.0.5.

First, a password if you use Google, Facebook or Apple

If you signed up with Google, Facebook or Apple, Grammarly wants a password on the account before you can turn on two-step verification (Grammarly). On your Profile page, click Create next to the password field, then use the Reset password button in the email Grammarly sends. Your old sign-in button keeps working (Grammarly).

Grammarly may also email you a 6-digit code during setup, so check you can open that inbox.

Turn on two-step verification with an authenticator app

These steps follow Grammarly's setup article, last edited September 30, 2026 (Grammarly):

1. Sign in at account.grammarly.com and open the account tab in the left-side panel. The setup article calls it Your account. Other Grammarly pages call it Settings.
2. In the Security section, select Two-step verification. You can also go straight to account.grammarly.com/security/mfa.
3. Click Turn on. If Grammarly asks, enter your password and the 6-digit code it emails you.
4. Choose a third-party authenticator app as your second factor.
5. Grammarly shows a barcode (a QR code). In Novaz, tap +, then Scan QR code, and point the camera at it. If the code is on your iPhone's own screen, take a screenshot, tap +, then Choose a photo. See scanning a QR code on the same iPhone.
6. Click Next, type the 6-digit code from Novaz, and click Verify.
7. Save the backup codes in the pop-up (see below), then click Done.

Grammarly then sends you a confirmation email. Its help only talks about scanning and doesn't mention a text key. If you're offered one, tap +, then Enter key manually in Novaz, and paste it as the Setup key. See What is a 2FA setup key?

Keep the backup codes somewhere else

Grammarly is blunt about these: if you lose your phone or your authenticator app, a backup code is the only way to sign in to your account on a new device (Grammarly). They appear in a pop-up during setup, and Grammarly's help doesn't describe a way to view them again or make new ones.

A Novaz iCloud backup or backup file can bring your keys to a new iPhone, but if the phone is gone without one, these codes are what's left. Keep them in a password manager or on paper. See 2FA backup codes.

When Grammarly asks for a code

Grammarly asks for the code the next time you sign in on a new device. You can mark a device as trusted to skip the step on it, while sign-ins anywhere else still need a code (Grammarly).

If Grammarly keeps showing you CAPTCHA checks, its help suggests an authenticator app to stop them (Grammarly).

If Grammarly rejects your code

Grammarly's troubleshooting covers text messages that don't arrive, not authenticator codes (Grammarly). With an app, the clock is the usual suspect: on your iPhone, open Settings > General > Date & Time and turn on Set Automatically. Novaz warns you when the clock is off by 15 seconds or more. Other causes are in Authenticator code not working?

If you lose your authenticator

Grammarly's help gives two routes (Grammarly):

1. With a backup code: sign in with it, then update your two-step verification settings.
2. Without one: sign in with your email and password as usual. On the two-step verification screen, click Try Another Way, then Contact Support. Add a short description if you like and click Submit. Grammarly says Support replies within a few business days.

The help doesn't say what proof Support asks for. A recovery email, added with Add recovery email on your Profile page, helps if you lose the email address instead. It isn't available for Grammarly Enterprise or SSO accounts (Grammarly). More in Lost the phone with your authenticator app?

New phone, or turning it off

Grammarly's help doesn't explain moving the authenticator to another phone or turning two-step verification off. It only documents Edit Settings on the Two-step verification page for changing the text-message number, which free users can't do (Grammarly).

With Novaz's iCloud backup or a backup file, you can restore your accounts on the new iPhone. Either way, keep your old iPhone and your backup codes until Grammarly codes work on the new one. See How to transfer your authenticator app to a new iPhone.

Official Grammarly help

• How to set up two-step verification
• I've lost access to my phone and can't log in
• How can I keep my account secure?
• Set a password if you registered using Google, Facebook, or Apple
• How to update my phone number
• Why can't I pass the CAPTCHA verification?
• Set up and use a recovery email for your Grammarly account
• I haven't received a text message with a verification code
• What is Superhuman?
• How do I access Superhuman?