# OTP Auth vs Protectimus SMART

The clearest difference is rating: OTP Auth at 4.6 against Protectimus SMART's 3.9. OTP Auth also leads on update cadence (every 2 weeks vs every 7 months) and review sentiment (80% vs 57%). Protectimus SMART's advantage is in-app purchases (none vs 1). On price, ads and device support there is nothing between them.

Both are free to download. OTP Auth sells 1 one-off in-app purchase. Protectimus SMART asks for nothing beyond the download.

OTP Auth holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: OTP Auth has 476 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 80% of OTP Auth's written reviews are positive against 57% of Protectimus SMART's.

OTP Auth ships an update every 2 weeks, Protectimus SMART every 7 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | OTP Auth | Protectimus SMART |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (476 ratings)](https://appshunter.io/ios/app/otp-auth/id659877384/reviews)** | [3.9 (18 ratings)](https://appshunter.io/ios/app/protectimus-smart/id854508919/reviews) |
| Number of ratings | **476** | 18 |
| Positive reviews | **79.9% of reviews** | 57.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 22 MB | 51 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roland Moers](https://appshunter.io/developer/659877387) | [Protectimus Limited](https://appshunter.io/developer/1803390093) |

## What reviewers say

### OTP Auth

[App page](https://appshunter.io/ios/app/otp-auth/id659877384)

Enhance your account security with two-factor authentication on your iPhone and iPad. This app supports numerous popular services and offers robust encryption for all your data. It works offline and prioritizes user privacy by not collecting or transmitting personal information.

**Highlights:** Two-factor authentication support, Encrypted iCloud Sync, Siri and Apple Watch support, Notification Center widget, Safari extension for password pasting, Face ID/Touch ID security, Encrypted backups and import/export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OTP Auth Pro | $3.99 | one-time |

**What reviewers like**

- 🚀 Simple and effective
- 🔒 Secure with backup/restore
- 👍 Great Apple Watch support
- 👍 Intuitive and user-friendly
- 👍 Customizable icons and folders

**What reviewers complain about**

- 🐛 Occasional sync and widget issues
- 🐛 Apple Watch app needs improvements
- 🐛 Unreliable backup/restore for some users
- 🐛 Crashes and bugs reported by a few

**Reported bugs**

- Sync issues causing data loss
- Widget not displaying codes correctly
- Crashes on certain iOS versions

**Requested features**

- Larger text/font size options
- Alphabetical sorting of accounts
- Automatic account refresh/update
- Ability to edit account details


### Protectimus SMART

[App page](https://appshunter.io/ios/app/protectimus-smart/id854508919)

This free two-factor authentication app provides secure access to websites requiring 2FA. It offers encrypted cloud backup, PIN and biometric protection, easy token transfer, and customization options for enhanced account security.

**Highlights:** Encrypted cloud backup, PIN and biometric protection, Token transfer to new devices, Token customization, Folder sorting, Supports OATH algorithms (HOTP, TOTP, OCRA), Data signature function

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

**In-app purchases:** none


## Frequently asked questions

### Is OTP Auth free?

OTP Auth is free to download, with in-app purchases available.

### Is Protectimus SMART free?

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

### Which has better reviews, OTP Auth or Protectimus SMART?

OTP Auth is rated higher. OTP Auth averages 4.6 out of 5 from 476 ratings, while Protectimus SMART averages 3.9 from 18 ratings.

### Do OTP Auth or Protectimus SMART have ads?

Neither OTP Auth nor Protectimus SMART shows ads.

### Which is updated more often, OTP Auth or Protectimus SMART?

OTP Auth ships an update every 2 weeks, and Protectimus SMART every 7 months. Most recently, OTP Auth was updated on October 23, 2026 and Protectimus SMART on October 23, 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.*