# TOTP Authenticator vs Open Authenticator

The clearest difference is review sentiment: Open Authenticator at 100% against TOTP Authenticator's 36%. Open Authenticator also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.7). TOTP Authenticator's advantage is ratings volume (3.9K vs 1). On price, ads and device support there is nothing between them.

Both are free to download. TOTP Authenticator sells 2 one-off in-app purchases. Open Authenticator asks for nothing beyond the download.

Open Authenticator holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: TOTP Authenticator has 3.9K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 36% of TOTP Authenticator's written reviews are positive against 100% of Open Authenticator's.

## The numbers

| Metric | TOTP Authenticator | Open Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3.9K ratings)](https://appshunter.io/ios/app/totp-authenticator-fast-2fa/id1404230533/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/open-authenticator/id1583588049/reviews)** |
| Number of ratings | **3.9K** | 1 |
| Positive reviews | 36.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 24 MB | 24 MB |
| Requires iOS | 17.0 | **12.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AppyFactor](https://appshunter.io/developer/1404230532) | [Odroe Inc.](https://appshunter.io/developer/1477720111) |

## What reviewers say

### TOTP Authenticator

[App page](https://appshunter.io/ios/app/totp-authenticator-fast-2fa/id1404230533)

Enhance your online security with this app that generates one-time tokens for two-factor authentication. Protect your accounts from hackers by easily adding 2FA to your online services. Supports cloud sync and a Chrome extension for seamless desktop integration.

**Highlights:** Cloud Sync for backup, Chrome Extension for desktop, Dark and light theme support, Multi-platform and multi-device sync, Unlimited account support, Home screen widgets, Biometric app lock

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TOTP Premium Features | $5.99 | one-time |
| TOTP Default Product | $5.99 | one-time |

**What reviewers like**

- 👍 Solid free basic experience
- 🚀 Simple and effective
- 👍 Easy to use and set up new accounts
- 🚀 Chrome extension is cool
- 🔒 Excellent app for 2FA

**What reviewers complain about**

- 🐛 No export functionality
- 🐛 Impossible to recover account without paying
- 🐛 Can't save Authy keys from sites
- 🐛 Codes expire too fast
- 🐛 Doesn't work with some services

**Reported bugs**

- Codes not working, invalid or expired
- Sync issues, lost codes
- Doesn't work with some services
- Login screen freezes
- Incompatible with older devices

**Requested features**

- Increase font size of codes
- Add folder/tree organization for keys
- Implement Face ID support
- Add dark mode theme
- Allow pushing multiple codes to Chrome extension at once


### 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


## Frequently asked questions

### Is TOTP Authenticator free?

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

### Is Open Authenticator free?

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

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

Open Authenticator is rated higher. TOTP Authenticator averages 4.7 out of 5 from 3.9K ratings, while Open Authenticator averages 5.0 from 1 ratings.

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

Neither TOTP Authenticator nor Open Authenticator 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.*