# Thetis Authenticator vs PassOff

The clearest difference is in-app purchases: Thetis Authenticator at none against PassOff's 1. Thetis Authenticator also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.5). On price and ads there is nothing between them.

Both are free to download. PassOff sells 1 one-off in-app purchase. Thetis Authenticator asks for nothing beyond the download.

## The numbers

| Metric | Thetis Authenticator | PassOff |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Monetization | Free | — |
| Size | 3 MB | 2 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Razzo Tech Corporation](https://appshunter.io/developer/1566501237) | [军 沈](https://appshunter.io/developer/1871797808) |

## What reviewers say

### 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


### PassOff

[App page](https://appshunter.io/ios/app/passoff/id6758669689)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanent Membership | $0.99 | one-time |


## Frequently asked questions

### Is Thetis Authenticator free?

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

### Is PassOff free?

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

### Do Thetis Authenticator or PassOff have ads?

Neither Thetis Authenticator nor PassOff 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.*