The Tool Desk
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A password manager and an authenticator app usually do different jobs, so most people do not need to choose one instead of the other. A password manager creates, stores, and autofills passwords; an authenticator app adds another sign-in proof, such as a one-time code or push approval. The main tradeoff is convenience versus separation: storing both a password and its two-factor code in one vault is simpler, while keeping them apart can reduce how much an attacker could gain from compromising that vault.
What each tool does
Password manager
A password manager can generate a long, unique password for each account, store those passwords in an encrypted vault, and autofill them when you sign in. That makes it easier to avoid password reuse without memorizing every credential. NIST recommends password managers for password-based accounts and says they can improve both security and convenience: NIST SP 800-63 FAQ, Q-B12.
Authenticator app
An authenticator app supplies an additional sign-in proof after, or alongside, a password. Common methods include a time-based one-time password (TOTP) code that you enter, or a push notification that you approve. Multi-factor authentication (MFA) can help protect an account even if its password is compromised, but the account must support the method you want to use. NIST describes these options in its cybersecurity guidance.
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Advantages
- Unique passwords are easier to maintain. A manager can generate and remember a different password for every site, reducing the temptation to reuse one password across accounts.
- Autofill cuts down on manual entry. It can simplify sign-in and account maintenance across supported sites and devices.
- Choice can match your devices and needs. The UK National Cyber Security Centre (NCSC) suggests a browser- or device-maker password manager when convenience is the priority. A reputable third-party manager may suit people who use a complex mix of browsers and devices, need features such as secure notes or password sharing, or want to avoid vendor lock-in. See the NCSC’s password manager guidance.
Drawbacks
- The vault is a concentration point. The master credential protects access to many saved passwords. NIST advises using a long passphrase and MFA where available; if the master secret is compromised, passwords in the vault may need to be recreated. Plan how you will regain access if you forget the master credential.
- An unlocked device can expose saved credentials. NCSC warns that passwords may be accessible if a laptop is unlocked. Lock devices when unattended and keep them updated.
- Built-in tools may lack features you want. Browser- or device-based managers can be less capable than standalone tools for options such as secure notes or password sharing, according to the NCSC guidance.
Authenticator app: advantages and drawbacks
Advantages
- MFA adds a check beyond the password. It can help protect an account when a password has been compromised. The exact protection depends on the sign-in method and the service’s implementation.
- Some codes work without connectivity. Microsoft Support says codes in its Authenticator app do not require internet access or phone service. That statement applies to those codes, not every feature in every authenticator app. Microsoft says push sign-in responses do require an internet connection. See Microsoft Authenticator sign-in guidance.
Drawbacks
- A lost or replaced phone can complicate sign-in. If the phone holds your only second factor, you may be unable to complete a login until you recover or re-enroll it. Save recovery codes and register backup methods wherever the service offers them.
- Separate devices add work. Keeping the authenticator on a different device can improve separation, but that device also needs protection and a recovery plan. It is not a guarantee against compromise.
- App features differ. Support for TOTP codes, push approvals, security keys, and passkeys varies by app, account type, service, and region. Check the account’s available sign-in options rather than assuming an app supports them all.
Should you keep 2FA codes in your password manager?
Storing a password and its TOTP code in the same manager is convenient: fewer apps to maintain and a simpler sign-in flow. But both factors then depend on the same vault’s security and recovery model. If an attacker gains access to that vault, the separation normally provided by a password plus a separately stored code is reduced.
#1 Best Overall
- ✅ PROTECT ONLINE ACCOUNTS – A password manager, two-factor security key, and secure communication token in one, OnlyKey can keep your accounts safe even if your computer or a website is compromised. OnlyKey is open source, verified, and trustworthy.
- ✅ UNIVERSALLY SUPPORTED – Works with all websites including Twitter, Facebook, GitHub, and Google. Onlykey supports multiple methods of two-factor authentication including FIDO2 / U2F, Yubico OTP, TOTP, Challenge-response.
- ✅ PORTABLE PROTECTION – Extremely durable, waterproof, and tamper resistant design allows you to take your OnlyKey with you everywhere.
- ✅ PIN PROTECTED – The PIN used to unlock OnlyKey is entered directly on it. This means that if this device is stolen, data remains secure, after 10 failed attempts to unlock all data is securely erased.
- ✅ EASY LOG IN –No need to remember multiple passwords because by plugging OnlyKey to your computer, it automatically inputs your username and password. It works with Windows, Mac OS, Linux, or Chromebook, just press a button to login securely!
A separate authenticator, particularly on another device, creates more separation between the password and the second factor. The cost is extra setup, device dependence, and another recovery process to maintain. There is no universal winner: the better fit depends on your risks, the manager’s safeguards, and whether you will reliably keep backups and recovery methods current.
Where passkeys fit
Passkeys are a related option, not simply another name for authenticator codes. For supported accounts, a passkey can replace password-based sign-in. It uses a private key held through a device or platform arrangement, while the website receives a distinct credential; NCSC explains that this public-key approach is designed to resist phishing. Availability depends on the service, and access recovery depends on the device, platform, and any sync arrangement. Read the NCSC guidance on passkeys and password managers and NIST’s cybersecurity basics.
Rank #2
- POWERFUL SECURITY KEY: The Security Key C NFC is the essential physical passkey for protecting your digital life from phishing attacks. It ensures only you can access your accounts.
- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key C NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key C NFC via USB-C and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
- BUILT TO LAST: Made from tough, waterproof, and crush-resistant materials. Manufactured in Sweden and programmed in the USA with the highest security standards.
Implementation details matter. Microsoft documents passkeys for Microsoft Entra ID Authenticator as device-bound: they do not leave the device on which they were created. That is specific to that deployment and should not be generalized to every passkey.
Choose a setup you can recover
- Choose a password manager if you need help creating and maintaining unique passwords, especially across many accounts.
- Add MFA to important accounts where available; use the method the service supports and that you can reliably access.
- Use a separate authenticator if separating the password from the second factor is important to you and you can manage the extra backup and recovery steps.
- Use the manager for both if convenience is the priority and you are comfortable with both credentials depending on one vault’s protections and recovery.
- Consider a passkey when an account supports it and its device or sync recovery arrangement works for you.
Whichever arrangement you choose, protect a password-manager vault with a long, unique master passphrase, enable MFA for the vault when available, keep devices updated and locked, and know how you would recover access after losing a device or forgetting the master credential. For an additional physical MFA factor, a FIDO security key is an option where the account supports it; check the account’s supported standards and the key’s connector before buying. NIST lists USB dongles among MFA methods, and Microsoft documents security keys for Entra ID authentication methods.
Quick Recap
Best Value
- FIDO-ONLY FUNCTIONALITY: Supports FIDO2 (passkeys) and FIDO U2F protocols for passwordless and second-factor authentication. Does not support OTP, TOTP, Smart Card (PIV), or other advanced features - upgrade to YubiKey 5 Series for extended functionality
- SECURE AND CONVENIENT: Passwordless MFA login with the YubiKey Bio authenticator and biometric information using a fingerprint, with a PIN as a fallback. Simply plug in via USB and use your fingerprint to authenticate
- DEVICE & OS COMPATIBILITY: Compatible with Windows, macOS, ChromeOS, and Linux. Works seamlessly with supported services like Google and Microsoft accounts, and major password managers. See the full compatibility list at "Works With YubiKey"
- DURABLE & RELIABLE: Resistant to tampering, water, and crushing. No batteries or network connectivity required, offering dependable authentication without any downtime. Securely manufactured in USA & Sweden
- Yubico Authenticator App - Fingerprint enrollment, passkey management and PIN configuration available via the app app - Upgrade to YubiKey 5 Series to generate one-time-passwords (OTP) via Yubico Authenticator and for advanced compatibility (OATH, PIV)
Rank #3
- Requires 3 "AAA" batteries (included)
- Unit auto-locks for 30 minutes after 5 consecutive incorrect PINs
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