# Open Authenticator vs Authenticator App

The clearest difference is review sentiment: Open Authenticator at 100% against Authenticator App's 50%. Open Authenticator also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 3). Authenticator App's advantage is ratings volume (136 vs 1) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Authenticator App sells 3 in-app purchases, starting at $2.99 per 7 days. Open Authenticator asks for nothing beyond the download.

Open Authenticator holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Authenticator App has 136 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Open Authenticator's written reviews are positive against 50% of Authenticator App's.

## The numbers

| Metric | Open Authenticator | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/open-authenticator/id1583588049/reviews)** | [4.5 (136 ratings)](https://appshunter.io/ios/app/authenticator-app-2fa-and-mfa/id1621928288/reviews) |
| Number of ratings | 1 | **136** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 19 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Odroe Inc.](https://appshunter.io/developer/1477720111) | [BEYLER Software](https://appshunter.io/developer/1551010741) |

## What reviewers say

### Open Authenticator

[App page](https://appshunter.io/ios/app/open-authenticator/id1583588049)

This application generates secure, time-based one-time passwords for authentication. Its open-source code is community-reviewed, ensuring no backdoors and consistent TOTP compliance for robust security.

**Highlights:** HMAC-based One-time Password generation, TOTP compliance, Completely open-source code, Community supervised, No backdoor security

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-and-mfa/id1621928288)

Securely store and generate two-factor authentication tokens for your online accounts. This app enhances your digital security by providing Time-based One-time Passwords (TOTP) and Hash-based one-time passwords (HOTP). It offers encrypted backups and cross-device access for peace of mind.

**Highlights:** Two-factor authentication token generation, Time-based and Hash-based OTP support, Encrypted backup for security, Access across multiple Apple devices, Supports thousands of online accounts

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per 7 days |
| Premium | $4.99 | per month |
| Premium | $19.99 | per year |


## Frequently asked questions

### Is Open Authenticator free?

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

### Is Authenticator App free?

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

### Which has better reviews, Open Authenticator or Authenticator App?

Open Authenticator is rated higher. Open Authenticator averages 5.0 out of 5 from 1 ratings, while Authenticator App averages 4.5 from 136 ratings.

### Do Open Authenticator or Authenticator App have ads?

Neither Open Authenticator nor Authenticator App 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.*