Comparison

Auth0 Guardian vs Authenticator App ™

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

Authenticator App ™

This app provides a secure way to manage two-factor authentication (2FA) for your online accounts. It generates time-based one-time passwords (TOTP) that update every 30 seconds, offering an extra layer of security without needing an internet connection. Features include iCloud backup, cross-device synchronization, and biometric unlock.

Highlights
  • Time-based one-time password (TOTP) generation
  • Secure iCloud backup and encryption
  • Synchronization across all devices
  • Unlock with FaceID or password
  • 100% Ad-Free experience
  • Compatible with over 2,500 websites and services
Features
Read full description

Authenticator App is a secure application for two-factor authentication (2FA) that stores and generates time-based codes (OTP) to protect your online accounts by adding an additional layer of security when signing in. Our universal authenticator app is compatible with more than 2.500 websites and services. Create your secure MFA token in seconds, just scan the QR code for a quick & easy setup. Enter your unique one-time password (OTP software token) generated by our app on the website and voila!  It is that easy to 2FA verify your online identity.  The 6-digit code will update to a new one every 30 seconds. This timer is so you never have to use the same time-based one-time password (TOTP) more than once and you don’t have to remember the number since it will change all the time. Once our code generator app is configured, you can get verification codes without the need for a network or cellular connection. Additional Universal authenticator app features include: * Easy and user friendly  No account setup is required, just scan the 2FA QR-Code and the Authenticator app is automatically ready to use. * iCloud Backup & encryption Your data is always encrypted when stored including when it is saved in your iCloud to make sure that you are the only person who can read your data. Our Authenticatir always create a secure and encrypted backup swell in case you should lose your device, so you can easily restore your data on another decide in your iCloud account. * Synchronization Across All Devices When using our authenticater app you can always switch between your devices and access your codes in real time on all devices connected to your iCloud. * Unlock with Password or FaceID To add an extra layer of security you can setup FaceID or a password in the app so you are the only one who can read your codes and for a faster access. * 100% Ad-Free Enjoy a completely Ad Free mobile two factor authentication experience for IOS and compatible with all Apple devices. We are also proud to say that our Universal Authenticator app push the boundaries by being compatible with all websites and all type of authentication practices including Multi-factor authentication (MFA), RSA SecurID, Time based one-time password (TOTP), 2 step verification, 2 factor authenticate (2FA Security Token), ID Verify and Online ID Account Protection & Security. ————————————————— Do you need help? Or have any questions? Please contact our dedicated support staff before leaving a negative review - we will always get back to you within 48 hours! SUPPORT: For any questions or requests, please contact our customer support here: https://intercom.help/codenhagenio-aps/en/collections/8884636-app-support ————————————————— Subscription terms: Payment will be charged to the credit card connected to your iTunes Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. Privacy Policy: https://www.codenhagen.io/app/Universal-Authenticator/Privacy/ Terms of Use: https://www.codenhagen.io/app/Universal-Authenticator/Terms/

Screenshots

Auth0 Guardian4 screens
Authenticator App ™4 screens

Verdict

The call

The clearest difference is rating: Authenticator App ™ at 4.4 against Auth0 Guardian's 2.4. Authenticator App ™ also leads on update cadence (every 2 weeks vs every 3 months) and ratings volume (25K vs 114). Auth0 Guardian's advantage is in-app purchases (none vs 2). On price, ads and device support 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. Authenticator App ™ sells 2 in-app purchases, starting at $9.99 per month. Auth0 Guardian asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Authenticator App ™ holds the better App Store score, 4.4 against 2.4. That said, the two scores are not equally well evidenced: Authenticator App ™ has 25K ratings behind it against 114, so its average is the more settled of the two. Written reviews point the same way: 15% of Auth0 Guardian's written reviews are positive against 30% of Authenticator App ™'s.

UpkeepUpdate frequency

Auth0 Guardian ships an update every 3 months, Authenticator App ™ every 2 weeks. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 3 level
Auth0 Guardian versus Authenticator App ™: the parameters behind the verdict, then further details
ParameterAuth0 GuardianAuthenticator App ™
PriceFreeFree
Rating2.4 (114 ratings)4.4 (25K ratings) — better
Positive reviews14.6% of reviews29.7% of reviews — better
Number of ratings11425K — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.013.0 — better
Further details — not scored
Size20 MB19 MB
Age rating4+4+
DeveloperAuth0Codenhagen.IO ApS

Customer experience

Auth0 Guardian

All ratings114 ratings
Positive28.9%
Neutral6.1%
Negative64.9%
Written reviews48 reviews
Positive14.6%
Neutral10.4%
Negative75.0%

Authenticator App ™

All ratings24,597 ratings
Positive83.4%
Neutral4.2%
Negative12.4%
Written reviews138 reviews
Positive29.7%
Neutral2.9%
Negative67.4%

User reviews

Auth0 Guardian

From 114 App Store ratings

What we love

  • 👍 Generally reliable authenticator
  • 👍 Intuitive and simple
  • 👍 Clean easy to use app
  • 👍 Beautiful app that works
  • 👍 Worked just fine

Room to improve

  • 🐛 Notifications not working properly
  • 🐛 No more Apple Watch or lock screen approval
  • 🐛 Cannot approve from Apple Watch
  • 🐛 Push notifications stopped working
  • 🐛 App is garbage

Authenticator App ™

From 25K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Works well
  • 👍 Simple and straightforward
  • 🚀 Functional tool

Room to improve

  • 🐛 Unable to remove accounts
  • 🐛 Difficult to cancel subscription
  • 🐛 Doesn't work as expected
  • 🐛 Not user friendly
  • 🐛 Unreliable

Bugs and requests

Auth0 Guardian

Reported bugs

37 issues
  • Notifications not working properly on iPhone iOS
  • Limited notification configuration settings
  • Apple Watch notification not working
  • Push notifications not working
  • New update broke Apple Watch approvals
Show 32 more
  • Cannot approve MFA with Apple Watch
  • Cannot long press on push notification to approve login
  • Push Notification not working
  • Push notifications stopped working
  • Update fixed push notifications, now requires manual code entry
  • New update still no notification sounds
  • Receiving same code for different accounts
  • iPhone does not show all numbers
  • Only shows 4 numbers, need to copy and paste to see all
  • Cannot see all 6 digits after update
  • Cannot see ALL 6 numbers to log onto computer
  • New phone transfer issues
  • App did not transfer over to new phone
  • QR code does not exist for new phone setup
  • Won't let me transfer my account to a different phone
  • Notifications are not working
  • No notification sound
  • No sound when notification comes up
  • No sound with the notification
  • Confirmations never come up, have to go into the app for codes
  • App prompts to start without instructions, link, or QR code
  • App did not transfer well and was unusable on new phone
  • Cannot install application on telephone
  • Poor migration, no way to migrate Authenticator app to a new device
  • Doesn't work—won't scan any QR code’s
  • Confirmation page doesn’t show immediately
  • Crashes immediately upon launch
  • Unable to remove tokens
  • Push authorization no longer works, app just turns off
  • Client won’t even open
  • App doesn't launch
  • Always crashes on startup

Requested features

12 requests
  • Allow account transfer to another phone
  • Create a feature to transfer connected accounts to the same app on another phone
  • Add watch capability
  • Needs a watch version
  • Add Apple Watch notification support
Show 7 more
  • Restore Apple Watch approval
  • Restore lock screen approval
  • Add sound to notifications
  • Allow users to see all 6 digits on iPhone
  • Improve app startup process
  • Provide instructions or QR code for initial setup
  • Allow deletion of retired tokens

Authenticator App ™

Reported bugs

4 issues
  • Login screen freezes
  • QR code scanning issues
  • Accounts not syncing properly
  • Subscription not cancelling

Requested features

3 requests
  • Dark mode option
  • Better customer support
  • Easier subscription management

In-app purchases

None

Auth0 Guardian

No in-app purchases

2 purchases

Authenticator App ™

Subscriptions2
  • Authenticator Premium3 Days trial$9.991 Month
  • Authenticator Premium3 Days trial$39.991 Year

Questions

Is Auth0 Guardian free?
Auth0 Guardian is free to download, with no in-app purchases.
Is Authenticator App ™ free?
Authenticator App ™ is free to download, with in-app purchases available.
Which has better reviews, Auth0 Guardian or Authenticator App ™?
Authenticator App ™ is rated higher. Auth0 Guardian averages 2.4 out of 5 from 114 ratings, while Authenticator App ™ averages 4.4 from 25K ratings.
Do Auth0 Guardian or Authenticator App ™ have ads?
Neither Auth0 Guardian nor Authenticator App ™ shows ads.
Which is updated more often, Auth0 Guardian or Authenticator App ™?
Auth0 Guardian ships an update every 3 months, and Authenticator App ™ every 2 weeks. Most recently, Auth0 Guardian was updated on October 8, 2026 and Authenticator App ™ on October 14, 2026.

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