# GL vs Thetis Authenticator

The clearest difference is update cadence: GL at every 4 months against Thetis Authenticator's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

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

GL ships an update every 4 months, Thetis Authenticator every 9 months. The most recent releases landed on May 18, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | GL | Thetis Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (4 ratings)](https://appshunter.io/ios/app/thetis-authenticator/id6648759010/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | — | Free |
| Size | 39 MB | 3 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [GL Technologies (HK) Limited](https://appshunter.io/developer/1490828301) | [Razzo Tech Corporation](https://appshunter.io/developer/1566501237) |

## What reviewers say

### GL

[App page](https://appshunter.io/ios/app/gl-s20-tool/id6499392074)

**Features:** macOS Compatibility

**In-app purchases:** none


### Thetis Authenticator

[App page](https://appshunter.io/ios/app/thetis-authenticator/id6648759010)

Manage your FIDO2 security keys for passwordless login and two-factor authentication. Supports NFC and Type-C connections for seamless integration across devices. Offers one-time password management for services not yet supporting FIDO2.

**Highlights:** FIDO2 passwordless login, Enhanced two-factor authentication, One-time password management, Optimized for iPad, NFC and Type-C compatibility, Cross-platform support, Phishing-resistant authentication

**In-app purchases:** none


## Frequently asked questions

### Is GL free?

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

### Is Thetis Authenticator free?

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

### Do GL or Thetis Authenticator have ads?

Neither GL nor Thetis Authenticator shows ads.

### Which is updated more often, GL or Thetis Authenticator?

GL ships an update every 4 months, and Thetis Authenticator every 9 months. Most recently, GL was updated on May 18, 2026 and Thetis Authenticator on June 1, 2026.

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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.*