NerdWallet offers several methods to log in to your account:
Email and password login method.
This will also require Multi-Factor Authentication (MFA) using either a text message (SMS) or an authenticator app.
You are encouraged to generate recovery codes in case you replace your phone or change your number.
NerdWallet also offers Google auth and Apple auth ("Sign in with Apple") as account login methods.
Using your Google or Apple account to authenticate and log in to your NerdWallet account can be simple and convenient.
Second-factor / MFA via SMS or Authenticator app may be required on these accounts as well, especially for access sensitive areas of the app.
You are encouraged to generate recovery codes in case you replace your phone or change your number.