# Authenticator App† vs Plus4U Key

The clearest difference is in-app purchases: Plus4U Key at none against Authenticator App†'s 3. Plus4U Key also leads on iOS requirement (13.0 vs 16.0). Authenticator App†'s advantage is update cadence (fortnightly vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator App† sells 3 in-app purchases, starting at $8.99 per 7 days. Plus4U Key asks for nothing beyond the download.

Authenticator App† ships an update fortnightly, Plus4U Key every 6 months. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Authenticator App† | Plus4U Key |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.5K ratings)](https://appshunter.io/ios/app/authenticator-app/id1672330315/reviews)** | — |
| Number of ratings | **2.5K** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 87 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appqe](https://appshunter.io/developer/1675570121) | [Plus4U Net a.s.](https://appshunter.io/developer/899103157) |

## What reviewers say

### Authenticator App†

[App page](https://appshunter.io/ios/app/authenticator-app/id1672330315)

Secure your online accounts with a versatile two-factor authentication solution. Manage all your authentication codes in one place, offering enhanced security for websites, services, and crypto wallets. Supports biometric access and offline code generation.

**Highlights:** Two-factor authentication (2FA), Multi-factor authentication (MFA), Time-based one-time passwords (TOTP), Biometric security (fingerprint, face ID, PIN), Offline code generation, Wide service compatibility

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription Pack | $8.99 | per 7 days |
| Monthly Subscription | $14.99 | per month |
| Yearly Subscription | $49.99 | per year |

**What reviewers like**

- 🚀 Fast and smooth app
- 🔒 Puts confidence in data security
- 👍 Great app overall

**What reviewers complain about**

- 🐛 Removed accounts after update
- 🐛 Deleted authentication codes
- 🐛 QR code scanning issues
- 🔒 Lost data and no backup
- 💰 Aggressive subscription upselling

**Reported bugs**

- Accounts removed after update
- Authentication codes deleted
- QR code scanning not working
- Data loss with no backup
- App freezing or crashing

**Requested features**

- Ability to rename token cards
- Option to pin favorites or sort
- Assign categories to entries


### Plus4U Key

[App page](https://appshunter.io/ios/app/plus4u-key/id6443866595)

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

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator App† free?

Authenticator App† is free to download, with in-app purchases available.

### Is Plus4U Key free?

Plus4U Key is free to download, with no in-app purchases.

### Do Authenticator App† or Plus4U Key have ads?

Neither Authenticator App† nor Plus4U Key shows ads.

### Which is updated more often, Authenticator App† or Plus4U Key?

Authenticator App† ships an update fortnightly, and Plus4U Key every 6 months. Most recently, Authenticator App† was updated on September 24, 2026 and Plus4U Key on September 9, 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.*