# Optimal Authenticator vs TOTP Authenticator

The clearest difference is rating: TOTP Authenticator at 4.7 against Optimal Authenticator's 3.0. TOTP Authenticator also leads on review sentiment (34% vs 0%) and ratings volume (3.9K vs 4). Optimal Authenticator's advantage is in-app purchases (none vs 2) and iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

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

TOTP Authenticator holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: TOTP Authenticator has 3.9K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of Optimal Authenticator's written reviews are positive against 34% of TOTP Authenticator's.

Optimal Authenticator ships an update every 3 months, TOTP Authenticator every 2 months. The most recent releases landed on September 19, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Optimal Authenticator | TOTP Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/optimal-authenticator/id1217402923/reviews) | **[4.7 (3.9K ratings)](https://appshunter.io/ios/app/totp-authenticator-fast-2fa/id1404230533/reviews)** |
| Number of ratings | 4 | **3.9K** |
| Positive reviews | 0.0% of reviews | **34.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 80 MB | 24 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Optimal IdM](https://appshunter.io/developer/1050742329) | [AppyFactor](https://appshunter.io/developer/1404230532) |

## What reviewers say

### Optimal Authenticator

[App page](https://appshunter.io/ios/app/optimal-authenticator/id1217402923)

This app provides a secure way to verify your identity for accessing other applications. It uses two-factor authentication via push notifications or verification codes, and allows organizations to register trusted devices for sign-in requests.

**Highlights:** Two-factor authentication, Push notification verification, On-app verification codes, Trusted device registration, Secure identity verification

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Optimal Authenticator free?

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

### Is TOTP Authenticator free?

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

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

TOTP Authenticator is rated higher. Optimal Authenticator averages 3.0 out of 5 from 4 ratings, while TOTP Authenticator averages 4.7 from 3.9K ratings.

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

Neither Optimal Authenticator nor TOTP Authenticator shows ads.

### Which is updated more often, Optimal Authenticator or TOTP Authenticator?

Optimal Authenticator ships an update every 3 months, and TOTP Authenticator every 2 months. Most recently, Optimal Authenticator was updated on September 19, 2026 and TOTP Authenticator on September 21, 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.*