Amazing Marvin 2FA: how to set up an authenticator app

Amazing Marvin is a task manager and day planner that you can use in a browser, as a desktop app, or on your phone. Its two-factor authentication (2FA) is optional and has a single method: a code from an authenticator app, added on top of your password (Amazing Marvin). There's no text-message option in Marvin's help. One catch: the Marvin mobile app can turn 2FA off but not on. You turn it on from the web or desktop app (Amazing Marvin). This guide uses Authenticator App - Novaz on iPhone. Any authenticator app works the same way.

How we checked this guide: the Amazing Marvin steps come from Amazing Marvin's own help center, linked below, which we read on October 21, 2026. We haven't tested them on an Amazing Marvin account, so a label may differ slightly. The Novaz steps are checked against the app, version 1.0.5.

Turn on 2FA with an authenticator app

Open Marvin in a web browser or in the desktop app, then follow these steps (Amazing Marvin):

1. Open the main menu (☰) and choose Account.
2. Scroll down the Account tab and click Enable 2FA.
3. Click Get Started. Marvin shows a QR code.
4. In Novaz, tap +, then Scan QR code, and point the camera at the screen. If Marvin is open on the same iPhone, take a screenshot, tap +, then Choose a photo. See scanning a QR code on the same iPhone.
5. If you can't scan it, Marvin also offers what its help calls a text code. In Novaz, tap +, then Enter key manually, type a name such as Amazing Marvin under Service, and paste the text code as the Setup key. See What is a 2FA setup key?
6. Type the 6-digit code from Novaz into Marvin.
7. Save the recovery codes Marvin gives you (next section).

Marvin's codes change every 30 seconds, the same interval Novaz uses for a typed key.

Save the recovery codes before you close the screen

Marvin's help warns that if you lose both the authenticator app and your recovery codes, "you won't be able to log into your Marvin account" (Amazing Marvin). The page doesn't say how many codes you get, whether each one works only once, or whether you can make a new set later.

Novaz keeps its keys on your iPhone unless you turn on iCloud backup or export a backup file. Without a Novaz backup, the recovery codes are your only way back in. Store them away from your phone: on paper, or in a password manager you can open from another device. More in 2FA backup codes.

Signing in with 2FA on

Marvin asks for the code right after your password. In the mobile app, the field is called 2FA Code: type the code from Novaz and tap Submit (Amazing Marvin). The mobile app signs in with email and password only. There's no sign-in with Apple or Google.

Marvin's help doesn't say whether it remembers trusted devices or how often it asks again.

If Marvin rejects your code

Marvin's help has no advice on rejected codes. The most common cause is a phone clock that has drifted, because the code is based on the current time. On iPhone, open Settings > General > Date & Time and turn on Set Automatically. Novaz warns you when the clock is 15 seconds or more off. For other causes, see Authenticator code not working?

If you lose your authenticator

You have two ways back in (Amazing Marvin):

• A recovery code. When Marvin asks for your 2FA code, type or paste a recovery code in its place and you're signed in. In the mobile app, tap Use recovery code first (Amazing Marvin).
• Marvin support. If you didn't save your recovery codes or have used them all, support can turn off 2FA for you after asking a series of questions to confirm who you are. The page doesn't list the questions or give a timeframe. Marvin's support page says you can reach the team through the app or by chat (Amazing Marvin).

The same page also warns you'd be locked out without the app and codes, so don't count on support. More in Lost the phone with your authenticator app?

Changing phones

Marvin's help doesn't describe moving 2FA to a new phone. In Novaz, an iCloud backup or backup file lets you restore your accounts on the new iPhone. Without one, the way that works with what Marvin documents: while you can still sign in, turn 2FA off, then turn it on again from the web or desktop app and scan the new QR code with Novaz on the new iPhone. You'll get new recovery codes, so save those too. See How to transfer your authenticator app to a new iPhone.

Turning 2FA off

You can turn it off any time you're signed in and know your password (Amazing Marvin). The web help doesn't name the button. In the mobile app, open the sidebar, tap Account & Settings, then Account. The Two-factor row shows whether 2FA is on, and you can turn it off there with your password (Amazing Marvin). Afterwards, open the Marvin entry in Novaz and tap Remove account.

Official Amazing Marvin help

• Two-Factor Authentication
• Logging in or creating an account
• Your account and subscription
• Here is how we can help you!