Auth0 Guardian vs Thomson Reuters Authenticator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Push notification authentication
- Allow/deny account access
- One-time password generation
- Multi-factor authentication
- Secure login
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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.
Thomson Reuters Authenticator
This app provides an additional layer of security for accessing Thomson Reuters software. It uses multi-factor authentication to verify your identity, protecting your data with a combination of something you know, have, and are.
- Multi-factor authentication
- Secure data protection
- Approve/ignore sign-on requests
- Automatic setup via QR code
- Support for multiple accounts
- Offline code generation
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Introducing the Thomson Reuters Authenticator: one app to verify your identity to access to Thomson Reuters software, providing an additional layer of security when signing in, helping you protect your data. Whether using this app to access Thomson Reuters software for work or personal use, multi-factor authentication adds an extra layer of protection to your data, wherever your software or data are stored. The easy-to-use design makes it simple. If you’ve enabled multi-factor authentication for any of your Thomson Reuters software, logging in to that software will trigger the Authenticator app to notify you on your device. Simply press approve (or use Face ID / Touch ID) to complete the sign-on process, or press ignore if you’re not trying to access the software at the time. Software that works with Thomson Reuters Authenticator allows you to authenticate on three levels: 1) Something you KNOW (your login and password) 2) Something you HAVE (your mobile device with the Thomson Reuters Authenticator app) 3) Something you ARE (Face ID / Touch ID) Features include: • Automatic setup via QR code • Support for multiple accounts • Generate verification codes without a data connection
Screenshots
Verdict
The clearest difference is rating: Auth0 Guardian at 2.4 against Thomson Reuters Authenticator's 1.2. Thomson Reuters Authenticator's advantage is ratings volume (1.8K vs 113). On price, review sentiment, update cadence and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Auth0 Guardian holds the better App Store score, 2.4 against 1.2. That said, the two scores are not equally well evidenced: Thomson Reuters Authenticator has 1.8K ratings behind it against 113, 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 11% of Thomson Reuters Authenticator's.
Auth0 Guardian ships an update every 3 months, Thomson Reuters Authenticator every 5 months. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.
| Parameter | Auth0 Guardian | Thomson Reuters Authenticator |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (113 ratings) — better | 1.2 (1.8K ratings) |
| Positive reviews | 14.6% of reviews — better | 10.7% of reviews |
| Number of ratings | 113 | 1.8K — better |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 6 MB |
| Age rating | 4+ | +4 |
| Developer | Auth0 | Thomson Reuters |
Customer experience
Auth0 Guardian
Thomson Reuters Authenticator
Bugs and requests
Auth0 Guardian
Not enough reviews yet to summarise bugs or requests.
Thomson Reuters Authenticator
Reported bugs
3 issues- QR code not working or unavailable
- Fails to authenticate even with correct credentials
- Permanently locked out after device change
Requested features
3 requests- Ability to delete old accounts
- Clearer instructions and documentation
- Notification support for approvals
In-app purchases
Auth0 Guardian
No in-app purchases
Thomson Reuters Authenticator
No in-app purchases
Questions
Is Auth0 Guardian free?
Is Thomson Reuters Authenticator free?
Which has better reviews, Auth0 Guardian or Thomson Reuters Authenticator?
Do Auth0 Guardian or Thomson Reuters Authenticator have ads?
Which is updated more often, Auth0 Guardian or Thomson Reuters Authenticator?
Other comparisons
