Comparison

Auth0 Guardian vs Zip Authenticator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Auth0 Guardian

This app provides multi-factor authentication by sending push notifications to your device for easy approval or denial of account access. It can also generate one-time passwords for secure logins.

Highlights
  • Push notification authentication
  • Allow/deny account access
  • One-time password generation
  • Multi-factor authentication
  • Secure login
Features
Read full description

Auth0 Guardian is a mobile app that can deliver push notifications to a user’s pre-registered device (typically a mobile phone or tablet) from which a user can immediately allow or deny account access via the press of a button. It can also generate one-time passwords if that is preferred. Note for developers: Auth0 Guardian is one of the multi factor authentication options that can be used within the Auth0 identity platform (https://auth0.com). You can enable it with a single switch. You don’t have to change your apps to start supporting multi factor authentication.

About

Zip Authenticator

Enhance financial transaction security with multi-factor authentication for Zip users. Approve payments directly from your mobile device, receiving detailed transaction information before confirmation. Compliant with EU regulations for secure online payments.

Highlights
  • Multi-factor authentication for Zip payments
  • Displays transaction details (amount, payee)
  • EU Strong Customer Authentication (SCA) compliance
  • Easy QR code setup
  • PIN-based verification
Read full description

With Zip Authenticator, Zip users (ziphq.com) gain an added layer of security for financial transactions by authenticating payments that are approved in Zip. Zip Authenticator ensures you are fully aware of the transaction about to happen, providing the details of the type, value and payee of the transaction, and then allowing you to approve the transaction on your mobile device. This provides strong 2-factor authentication of financial transactions compliant with EU Secure Customer Authentication (SCA) regulations. Zip Authenticator is easy to configure. To set up your authentication, you’ll first link a mobile device and create a pin. As you complete various payment-related activities in Zip, you’ll be prompted to enter your pin, which will generate a QR code. Then, open up your Zip Authenticator app to scan the QR code and verify your identity. Features include - Provides multi-factor authentication for B2B payment transactions in Zip (ziphq.com) - Displays payment details within the payment authentication alert, including amount and payee - Allows organizations using Zip for payments to comply with EU Strong Customer Authentication (SCA) regulations - Easy setup via QR code To use Zip Authenticator with Zip, you need to set up a pin on Zip > Personal settings. Visit www.ziphq.com/personal-settings/payout-authentication to get started.

Screenshots

Auth0 Guardian4 screens
Zip Authenticator4 screens

Verdict

The call

The clearest difference is rating: Zip Authenticator at 5.0 against Auth0 Guardian's 2.4. Zip Authenticator also leads on iOS requirement (13.4 vs 15.0). Auth0 Guardian's advantage is update cadence (every 3 months vs every 13 months) and ratings volume (113 vs 6). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Zip Authenticator holds the better App Store score, 5.0 against 2.4. That said, the two scores are not equally well evidenced: Auth0 Guardian has 113 ratings behind it against 6, so its average is the more settled of the two.

UpkeepUpdate frequency

Auth0 Guardian ships an update every 3 months, Zip Authenticator every 13 months. Both last shipped on September 17, 2026.

Scorecard4 real differences · 6 level
Auth0 Guardian versus Zip Authenticator: the parameters behind the verdict, then further details
ParameterAuth0 GuardianZip Authenticator
PriceFreeFree
Rating2.4 (113 ratings)5.0 (6 ratings) — better
Positive reviews14.6% of reviews—
Number of ratings113 — better6
Update frequencyEvery 3 months — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.013.4 — better
Further details — not scored
Size20 MB17 MB
Age rating4+4+
DeveloperAuth0ZipHQ, Inc.

Customer experience

Auth0 Guardian

All ratings113 ratings
Positive29.2%
Neutral6.2%
Negative64.6%
Written reviews48 reviews
Positive14.6%
Neutral10.4%
Negative75.0%

Zip Authenticator

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Auth0 Guardian

No in-app purchases

None

Zip Authenticator

No in-app purchases

Questions

Is Auth0 Guardian free?
Auth0 Guardian is free to download, with no in-app purchases.
Is Zip Authenticator free?
Zip Authenticator is free to download, with no in-app purchases.
Which has better reviews, Auth0 Guardian or Zip Authenticator?
Zip Authenticator is rated higher. Auth0 Guardian averages 2.4 out of 5 from 113 ratings, while Zip Authenticator averages 5.0 from 6 ratings.
Do Auth0 Guardian or Zip Authenticator have ads?
Neither Auth0 Guardian nor Zip Authenticator shows ads.
Which is updated more often, Auth0 Guardian or Zip Authenticator?
Auth0 Guardian ships an update every 3 months, and Zip Authenticator every 13 months. Most recently, Auth0 Guardian was updated on September 17, 2026 and Zip Authenticator on September 17, 2026.

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