Comparison

Optimal Authenticator vs Authenticator App ™

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Optimal Authenticator

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
Read full description

With the Optimal Authenticator, quickly and securely verify your identity for access to all of your applications. Authentication features include: Two-factor authentication: Two-factor authentication provides an extra layer of security to your account. When signing in, after entering your password, you'll be asked to provide additional verification via the app. A push notification is sent to your mobile device to alert you of a pending two-factor verification request. Simply tap on the notification to launch the app and tap Approve to complete the verification. Alternatively, you may be prompted to enter the verification code displayed in the app. Device registration: By registering your device through the app, organizations can verify that the sign-in request is coming from a trusted device.

About

Authenticator App ™

This app provides a secure way to manage two-factor authentication (2FA) for your online accounts. It generates time-based one-time passwords (TOTP) that update every 30 seconds, offering an extra layer of security without needing an internet connection. Features include iCloud backup, cross-device synchronization, and biometric unlock.

Highlights
  • Time-based one-time password (TOTP) generation
  • Secure iCloud backup and encryption
  • Synchronization across all devices
  • Unlock with FaceID or password
  • 100% Ad-Free experience
  • Compatible with over 2,500 websites and services
Features
Read full description

Authenticator App is a secure application for two-factor authentication (2FA) that stores and generates time-based codes (OTP) to protect your online accounts by adding an additional layer of security when signing in. Our universal authenticator app is compatible with more than 2.500 websites and services. Create your secure MFA token in seconds, just scan the QR code for a quick & easy setup. Enter your unique one-time password (OTP software token) generated by our app on the website and voila!  It is that easy to 2FA verify your online identity.  The 6-digit code will update to a new one every 30 seconds. This timer is so you never have to use the same time-based one-time password (TOTP) more than once and you don’t have to remember the number since it will change all the time. Once our code generator app is configured, you can get verification codes without the need for a network or cellular connection. Additional Universal authenticator app features include: * Easy and user friendly  No account setup is required, just scan the 2FA QR-Code and the Authenticator app is automatically ready to use. * iCloud Backup & encryption Your data is always encrypted when stored including when it is saved in your iCloud to make sure that you are the only person who can read your data. Our Authenticatir always create a secure and encrypted backup swell in case you should lose your device, so you can easily restore your data on another decide in your iCloud account. * Synchronization Across All Devices When using our authenticater app you can always switch between your devices and access your codes in real time on all devices connected to your iCloud. * Unlock with Password or FaceID To add an extra layer of security you can setup FaceID or a password in the app so you are the only one who can read your codes and for a faster access. * 100% Ad-Free Enjoy a completely Ad Free mobile two factor authentication experience for IOS and compatible with all Apple devices. We are also proud to say that our Universal Authenticator app push the boundaries by being compatible with all websites and all type of authentication practices including Multi-factor authentication (MFA), RSA SecurID, Time based one-time password (TOTP), 2 step verification, 2 factor authenticate (2FA Security Token), ID Verify and Online ID Account Protection & Security. ————————————————— Do you need help? Or have any questions? Please contact our dedicated support staff before leaving a negative review - we will always get back to you within 48 hours! SUPPORT: For any questions or requests, please contact our customer support here: https://intercom.help/codenhagenio-aps/en/collections/8884636-app-support ————————————————— Subscription terms: Payment will be charged to the credit card connected to your iTunes Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. Privacy Policy: https://www.codenhagen.io/app/Universal-Authenticator/Privacy/ Terms of Use: https://www.codenhagen.io/app/Universal-Authenticator/Terms/

Screenshots

Optimal Authenticator4 screens
Authenticator App ™4 screens

Verdict

The call

The clearest difference is rating: Authenticator App ™ at 4.4 against Optimal Authenticator's 3.0. Authenticator App ™ also leads on update cadence (every 2 weeks vs every 3 months) and review sentiment (29% vs 0%). Optimal Authenticator's advantage is in-app purchases (none vs 2). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Authenticator App ™ sells 2 in-app purchases, starting at $9.99 per month. Optimal Authenticator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Authenticator App ™ holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Authenticator App ™ has 24K 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 29% of Authenticator App ™'s.

UpkeepUpdate frequency

Optimal Authenticator ships an update every 3 months, Authenticator App ™ every 2 weeks. The most recent releases landed on September 19, 2026 and September 29, 2026 respectively.

Scorecard7 real differences · 3 level
Optimal Authenticator versus Authenticator App ™: the parameters behind the verdict, then further details
ParameterOptimal AuthenticatorAuthenticator App ™
PriceFreeFree
Rating3.0 (4 ratings)4.4 (24K ratings) — better
Positive reviews0.0% of reviews29.2% of reviews — better
Number of ratings424K — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size80 MB19 MB
Age rating4+4+
DeveloperOptimal IdMCodenhagen.IO ApS

Customer experience

Optimal Authenticator

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Authenticator App ™

All ratings24,209 ratings
Positive83.5%
Neutral4.1%
Negative12.3%
Written reviews137 reviews
Positive29.2%
Neutral2.9%
Negative67.9%

Bugs and requests

Optimal Authenticator

Not enough reviews yet to summarise bugs or requests.

Authenticator App ™

Reported bugs

4 issues
  • Login screen freezes
  • QR code scanning issues
  • Accounts not syncing properly
  • Subscription not cancelling

Requested features

3 requests
  • Dark mode option
  • Better customer support
  • Easier subscription management

In-app purchases

None

Optimal Authenticator

No in-app purchases

2 purchases

Authenticator App ™

Subscriptions2
  • Authenticator Premium3 Days trial$9.991 Month
  • Authenticator Premium3 Days trial$39.991 Year

Questions

Is Optimal Authenticator free?
Optimal 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, Optimal Authenticator or Authenticator App ™?
Authenticator App ™ is rated higher. Optimal Authenticator averages 3.0 out of 5 from 4 ratings, while Authenticator App ™ averages 4.4 from 24K ratings.
Do Optimal Authenticator or Authenticator App ™ have ads?
Neither Optimal Authenticator nor Authenticator App ™ shows ads.
Which is updated more often, Optimal Authenticator or Authenticator App ™?
Optimal Authenticator ships an update every 3 months, and Authenticator App ™ every 2 weeks. Most recently, Optimal Authenticator was updated on September 19, 2026 and Authenticator App ™ on September 29, 2026.

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