Optimal Authenticator vs s.GUARD Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Two-factor authentication
- Push notification verification
- On-app verification codes
- Trusted device registration
- Secure identity verification
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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.
s.GUARD Mobile
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Optimal Authenticator | s.GUARD Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 80 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Optimal IdM | instaSOLUTION AG |
In-app purchases
Optimal Authenticator
No in-app purchases
s.GUARD Mobile
No in-app purchases
Questions
Is Optimal Authenticator free?
Is s.GUARD Mobile free?
Do Optimal Authenticator or s.GUARD Mobile have ads?
Which is updated more often, Optimal Authenticator or s.GUARD Mobile?
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