# Yubico Authenticator vs CRTX

The clearest difference is rating: CRTX at 5.0 against Yubico Authenticator's 3.7. Yubico Authenticator's advantage is in-app purchases (none vs 4) and ratings volume (268 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. CRTX sells 4 in-app purchases, starting at $7.99 per month. Yubico Authenticator asks for nothing beyond the download.

CRTX holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Yubico Authenticator has 268 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Yubico Authenticator | CRTX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (268 ratings)](https://appshunter.io/ios/app/yubico-authenticator/id1476679808/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/crtx/id6761746898/reviews)** |
| Number of ratings | **268** | 1 |
| Positive reviews | 43.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 24 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Yubico](https://appshunter.io/developer/586890748) | [Lars Janssen](https://appshunter.io/developer/1891252260) |

## What reviewers say

### Yubico Authenticator

[App page](https://appshunter.io/ios/app/yubico-authenticator/id1476679808)

Secure your online accounts with hardware-backed two-factor authentication. Store unique credentials on a physical security key, eliminating the need to store sensitive data on your mobile device. Generate verification codes without an internet connection for enhanced account protection.

**Highlights:** Hardware-backed security key storage, Touch or NFC authentication, USB-C support, Biometric unlock (FaceID/TouchID), QR code setup, User presence verification, Smart Card support

**In-app purchases:** none

**What reviewers like**

- 🚀 Works well with Yubikey
- 🔒 Secure storage of OATH secrets
- 👍 Simple and easy to use
- 🚀 NFC support added

**What reviewers complain about**

- 🐛 NFC not working on some devices
- 🐛 Clunky UI for password-protected keys
- 🐛 Crashes and freezes reported
- 🐛 Incompatible with some devices (iPad, older iPhones)

**Reported bugs**

- NFC not working reliably
- Accounts disappearing after updates
- Calculation of codes not working
- Keyboard issues when using keys

**Requested features**

- Allow editing and rearranging of entries
- Add support for multiple keys per account
- Improve iPad/tablet support
- Add dark mode option
- Improve QR code scanning


### CRTX

[App page](https://appshunter.io/ios/app/crtx/id6761746898)

This app acts as a shared digital memory for your household, allowing you to save voice notes, photos, links, and documents. You can then ask questions in plain English to retrieve information saved by anyone in your group.

**Highlights:** Capture voice notes, photos, links, and PDFs, Search contents using natural language, Create private or shared memory pools, Assign and track tasks within shared pools, Automatic recognition of people in saved items, Apple Watch and share extension support

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CRTX Personal Monthly | $7.99 | per month |
| CRTX Family Monthly | $12.99 | per month |
| CRTX Personal Annual | $69.99 | per year |
| CRTX Family Annual | $119.99 | per year |


## Frequently asked questions

### Is Yubico Authenticator free?

Yubico Authenticator is free to download, with no in-app purchases.

### Is CRTX free?

CRTX is free to download, with in-app purchases available.

### Which has better reviews, Yubico Authenticator or CRTX?

CRTX is rated higher. Yubico Authenticator averages 3.7 out of 5 from 268 ratings, while CRTX averages 5.0 from 1 ratings.

### Do Yubico Authenticator or CRTX have ads?

Neither Yubico Authenticator nor CRTX shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*