OTP Auth vs Protectimus SMART
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OTP Auth
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.
- 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
Read full descriptionHide full description
OTP Auth adds support for two-factor authentication to your iPhone and iPad. It can be used with Dropbox, Facebook, GitHub, Google Mail and many more. Make your accounts safe again! Features: - Ads free - Encrypted iCloud Sync - Siri Support - Apple Watch support - Notification Center widget - Safari extension for pasting passwords into websites - Secure application using Face ID/Touch ID (or password) - Create encrypted backups of all accounts - Import/Export encrypted accounts using AirDrop, iCloud, Dropbox, Mail, ... - Works offline All data stored by OTP Auth is stored using strong AES-256 encryption. This applies for all data. In particular, for both locally stored data as well as data stored in the iCloud Drive (when iCloud Sync is enabled). The password for those files never leaves your device such that noone but you can read your data. OTP Auth does not collect information about you or send them anywhere. You won't be asked to allow access to your contacts or your location. And most important: OTP Auth does not connect to the internet and will not send your accounts to someone else! (Unless you enable iCloud sync where an AES-256 encrypted copy of your accounts is stored in your iCloud Drive. The password for that copy will never leave your phone.) Follow me on Twitter: @otpauth
Protectimus SMART
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.
- 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
Read full descriptionHide full description
Protectimus SMART OTP is currently the best two-factor authentication app worldwide. This free 2FA authenticator supports encrypted cloud backup, PIN and biometric authentication protection, simple token transfer to new devices, token customization, and folder sorting. The multi-factor authentication app Protectimus SMART OTP can be used to secure any website that requires two-factor authentication. Let's take a closer look at the features of this 2FA authenticator. - One of the most significant improvements in the new version of Protectimus SMART OTP is encrypted cloud backup. This feature ensures that users can recover their 2FA tokens if they lose their device or upgrade to a new one. - The app also makes it easy to transfer tokens to a new device and import tokens from Google Authenticator, making it simple to switch to Protectimus SMART OTP from other 2FA authenticators. - Additionally, Protectimus SMART OTP supports PIN and biometric authentication protection, including Touch ID and Face ID. - The 2FA app is compatible with a wide range of websites and applications as it supports all OATH one-time password generation algorithms such as HOTP, TOTP, and OCRA. - The MFA app also includes a data signature function (Confirm What You See) to help users better control their financial transactions. - The 2FA token Protectimus SMART OTP can generate 6 and 8-digit one-time passwords. Moreover, the 2FA authenticator offers several new features designed to make it more convenient for users to securely access their accounts. These include: - Delivery of push notifications. - The ability to customize tokens with different emojis and descriptions. - Convenient distribution of OTP tokens by folders. - Multiple language support (English, French, German, Spanish, Russian, and Ukrainian). Overall, Protectimus SMART OTP is a comprehensive 2FA authentication app that offers excellent features to help users secure their online accounts more efficiently and conveniently.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | OTP Auth | Protectimus SMART |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (476 ratings) — better | 3.9 (18 ratings) |
| Positive reviews | 79.9% of reviews — better | 57.1% of reviews |
| Number of ratings | 476 — better | 18 |
| Update frequency | Every 2 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 22 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Roland Moers | Protectimus Limited |
Customer experience
OTP Auth
Protectimus SMART
Bugs and requests
OTP Auth
Reported bugs
3 issues- Sync issues causing data loss
- Widget not displaying codes correctly
- Crashes on certain iOS versions
Requested features
4 requests- Larger text/font size options
- Alphabetical sorting of accounts
- Automatic account refresh/update
- Ability to edit account details
Protectimus SMART
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OTP Auth
- OTP Auth Pro$3.99
Protectimus SMART
No in-app purchases
Questions
Is OTP Auth free?
Is Protectimus SMART free?
Which has better reviews, OTP Auth or Protectimus SMART?
Do OTP Auth or Protectimus SMART have ads?
Which is updated more often, OTP Auth or Protectimus SMART?
Other comparisons















