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Cybersecurity · head to head

Google Authenticator vs Ory Kratos

Google Authenticator logo

Google Authenticator

Cybersecurity

Free TOTP two-factor authentication app that gained optional cloud sync in 2023

From
Free
Rated
-
Full reviewWebsite
Ory Kratos logo

Ory Kratos

Cybersecurity

Headless identity and user management API

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Google Authenticator enabling cloud sync moves the security boundary for your 2FA codes to your Google account, so a compromised Google account can expose the same codes syncing was meant to protect.; Ory Kratos headless means you build every screen, which is significant work compared with a hosted login page
  • They diverge on capability: Google Authenticator covers TOTP code generation, Ory Kratos covers Headless API.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Google Authenticator and Ory Kratos actually diverge.

Attributes where Google Authenticator and Ory Kratos differ
AttributeGoogle AuthenticatorOry Kratos
Pricing modelFree, no in-app purchasesOpen-source self-hosted, with a paid managed network
PlatformsiOS, AndroidLinux, Docker, Kubernetes, Self-hosted

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Google Authenticator

  • TOTP code generation
  • QR code setup
  • Optional Google account sync
  • Offline generation
  • Manual entry

Only in Ory Kratos

  • Headless API
  • Self-service flows
  • Multi-factor authentication
  • Pluggable identity schemas

What people use each for

The jobs each tool is most often brought in to do.

Google Authenticator

  • Someone setting up two-factor authentication on a website that asks for a TOTP appnot Ory Kratos
  • A user who wants codes to survive a lost or replaced phone via account syncnot Ory Kratos
  • Someone who prefers a simple, free, single-purpose authenticator over a password manager's built-in onenot Ory Kratos
  • A person migrating between phones who wants existing 2FA codes to transfer automaticallynot Ory Kratos

Ory Kratos

  • Products needing complete control over the look and flow of authenticationnot Google Authenticator
  • Applications that must not hand user identity data to a third partynot Google Authenticator
  • Teams building identity as infrastructure across several servicesnot Google Authenticator

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Google Authenticator

  • Enabling cloud sync moves the security boundary for your 2FA codes to your Google account, so a compromised Google account can expose the same codes syncing was meant to protect.
  • It has no built-in backup export in a portable format, so moving away from Google Authenticator to another app usually means resetting 2FA on every individual service.
  • It lacks organisational features such as folders, search or notes that some competing authenticator apps offer for people managing many accounts.
  • There is no desktop app, so codes must be read off a phone screen when logging in from a computer.
  • If sync is off and the phone is lost without a separate backup, all codes are unrecoverable and every linked account needs its 2FA reset through account recovery.

Ory Kratos

  • Headless means you build every screen, which is significant work compared with a hosted login page
  • More moving parts than a monolithic IAM: Kratos handles identity, and OAuth2 needs Ory Hydra alongside
  • Documentation assumes real familiarity with identity concepts and is not a gentle introduction
  • Self-hosting identity carries the security and availability burden that hosted providers absorb

Pricing, plan by plan

Google Authenticator

Free
  • FreeFree
    • Unlimited accounts and codes
    • Optional Google account cloud sync
    • No ads

Ory Kratos

Free
  • Self-hostedFree
    • Full identity server
    • All flows
    • Community support

Which should you pick?

Choose Google Authenticator if

  • You need totp code generation.
  • You want to start without paying.
  • You work on iOS, Android.
  • You also want qr code setup.
Google Authenticator review

Choose Ory Kratos if

  • You need headless api.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want self-service flows.
Ory Kratos review

Questions people ask

Is Google Authenticator or Ory Kratos better?
Neither clearly leads. Google Authenticator starts at Free and Ory Kratos at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Google Authenticator or Ory Kratos?
Google Authenticator starts at Free and Ory Kratos at Free.
Does Google Authenticator or Ory Kratos run on more platforms?
Google Authenticator runs on iOS, Android. Ory Kratos runs on Linux, Docker, Kubernetes, Self-hosted.
Can I use Google Authenticator for free?
Both have a free tier, so you can try either at no cost before committing.
What is Google Authenticator best used for?
Google Authenticator is most often used for someone setting up two-factor authentication on a website that asks for a totp app, a user who wants codes to survive a lost or replaced phone via account sync, someone who prefers a simple, free, single-purpose authenticator over a password manager's built-in one, a person migrating between phones who wants existing 2fa codes to transfer automatically. Of those, someone setting up two-factor authentication on a website that asks for a totp app and a user who wants codes to survive a lost or replaced phone via account sync are not what Ory Kratos is typically brought in for.
What can Google Authenticator do that Ory Kratos cannot?
Google Authenticator covers TOTP code generation, QR code setup, Optional Google account sync, Offline generation. Ory Kratos covers Headless API, Self-service flows, Multi-factor authentication, Pluggable identity schemas.

Answered from the vendors’ own pages

Google Authenticator: Does Google Authenticator cost anything?

No, it is free with no subscription or in-app purchases.

Ory Kratos: Is Ory Kratos free?

Yes, open source and free to self-host. Ory Network is a paid managed service.

Google Authenticator: Is cloud sync safe?

Google documents it as protected by your Google account security. Whether that is an acceptable trade-off versus device-only storage is debated; you can turn sync off if you prefer local-only codes.

Ory Kratos: What does headless mean here?

Kratos provides identity flows as APIs and no user interface. You build the login, registration and recovery screens yourself.

Google Authenticator: Can I export my codes to another app?

There is no official bulk export; moving to a different authenticator typically requires re-adding each account from its setup page.

Ory Kratos: Does Kratos do OAuth2?

No. Kratos handles user identity; OAuth2 and OpenID Connect provider functionality is Ory Hydra, a separate component.

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