Comparison

Optimal Authenticator vs s.GUARD Mobile

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

s.GUARD Mobile

Features
Read full description

Swissphone Digital Solutions AG offers you a modern and efficient communication and management solution in the areas of alerting, crisis management, mobile collaboration, messaging and IoT. In this way we contribute to increasing the safety and satisfaction of your customers and employees and ensure that you can concentrate even more on your core business. With the option of combining everyday and emergency communication, your employees effortlessly develop the routine they need to use in an emergency. Important: To use the application you need an account created especially for you. Further information at www.instasolution.ch.

Screenshots

Optimal Authenticator4 screens
s.GUARD Mobile1 screens

Verdict

The call

The clearest difference is update cadence: s.GUARD Mobile at monthly against Optimal Authenticator's every 3 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Optimal Authenticator ships an update every 3 months, s.GUARD Mobile monthly. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

Scorecard1 real difference · 9 level
Optimal Authenticator versus s.GUARD Mobile: the parameters behind the verdict, then further details
ParameterOptimal Authenticators.GUARD Mobile
PriceFreeFree
Rating3.0 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size80 MB68 MB
Age rating4+4+
DeveloperOptimal IdMinstaSOLUTION AG

In-app purchases

None

Optimal Authenticator

No in-app purchases

None

s.GUARD Mobile

No in-app purchases

Questions

Is Optimal Authenticator free?
Optimal Authenticator is free to download, with no in-app purchases.
Is s.GUARD Mobile free?
s.GUARD Mobile is free to download, with no in-app purchases.
Do Optimal Authenticator or s.GUARD Mobile have ads?
Neither Optimal Authenticator nor s.GUARD Mobile shows ads.
Which is updated more often, Optimal Authenticator or s.GUARD Mobile?
Optimal Authenticator ships an update every 3 months, and s.GUARD Mobile monthly. Most recently, Optimal Authenticator was updated on September 19, 2026 and s.GUARD Mobile on September 9, 2026.

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