# 2FA Authenticator (2FAS) vs MobileKey

The clearest difference is review sentiment: 2FA Authenticator (2FAS) at 77% against MobileKey's 32%. 2FA Authenticator (2FAS) also leads on rating (4.7 vs 1.0) and ratings volume (36K vs 1). MobileKey's advantage is iOS requirement (15.3 vs 18.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

2FA Authenticator (2FAS) holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: 2FA Authenticator (2FAS) has 36K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 77% of 2FA Authenticator (2FAS)'s written reviews are positive against 32% of MobileKey's.

2FA Authenticator (2FAS) ships an update monthly, MobileKey every 3 months. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 2FA Authenticator (2FAS) | MobileKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (36K ratings)](https://appshunter.io/ios/app/2fa-authenticator-2fas/id1217793794/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/mobilekey/id1231074427/reviews) |
| Number of ratings | **36K** | 1 |
| Positive reviews | **77.4% of reviews** | 32.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | Free |
| Size | 80 MB | 49 MB |
| Requires iOS | 18.6 | **15.3** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Two Factor Authentication Service Inc.](https://appshunter.io/developer/1217793793) | [SimonsVoss Technologies GmbH](https://appshunter.io/developer/1141846652) |

## What reviewers say

### 2FA Authenticator (2FAS)

[App page](https://appshunter.io/ios/app/2fa-authenticator-2fas/id1217793794)

Securely log in to your online accounts with two-factor authentication. This app protects your personal data and passwords from cyber threats with a simple, private, and open-source solution. It offers easy token restoration, app protection, and offline functionality.

**Highlights:** Two-factor authentication, Token backup and restore, App protection with passcode/biometrics, Open-source and transparent, Offline functionality, Cross-device sync, One-tap authentication with browser extensions

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient and fast
- 🔒 Secure and private
- 👍 Simple and intuitive UI
- 💡 Customizable icons and folders
- 🔒 iCloud backup and sync

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔒 Lack of password/PIN protection
- 🕰 No Apple Watch app
- 🐛 Issues with push notifications
- 🕰 Missing desktop/web app

**Reported bugs**

- Tokens disappearing after device changes
- Push notification failures
- Incompatibility with older devices

**Requested features**

- Alphanumeric passcode option
- Custom icon uploads
- Apple Watch app
- Desktop/web app
- Improved support and communication


### MobileKey

[App page](https://appshunter.io/ios/app/mobilekey/id1231074427)

Manage door statuses, grant remote access, and send digital keys to friends. Receive messages from event management and view access lists. Secure actions with Touch ID.

**Highlights:** Door status overview, Remote door openings, Send digital keys (Key4Friends), View access lists, Receive event management messages, Touch ID security

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 2FA Authenticator (2FAS) free?

2FA Authenticator (2FAS) is free to download, with no in-app purchases.

### Is MobileKey free?

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

### Which has better reviews, 2FA Authenticator (2FAS) or MobileKey?

2FA Authenticator (2FAS) is rated higher. 2FA Authenticator (2FAS) averages 4.7 out of 5 from 36K ratings, while MobileKey averages 1.0 from 1 ratings.

### Do 2FA Authenticator (2FAS) or MobileKey have ads?

Neither 2FA Authenticator (2FAS) nor MobileKey shows ads.

### Which is updated more often, 2FA Authenticator (2FAS) or MobileKey?

2FA Authenticator (2FAS) ships an update monthly, and MobileKey every 3 months. Most recently, 2FA Authenticator (2FAS) was updated on October 22, 2026 and MobileKey on October 17, 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.*