Blue2Factor vs Open Authenticator by Skyost
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blue2Factor
This app offers seamless and secure authentication using proximity, biometrics, and encryption. It integrates with SAML for single sign-on, creating a frictionless user experience.
- Invisible first and second factor authentication
- Single sign-on via SAML
- Proximity verification
- Biometric authentication
- Asymmetric encryption
- Frictionless and secure environment
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Blue2Factor provides invisible first and second factor authentication, and single sign-on through SAML integration. Blue2Factor supports proximity verification, biometrics, and asymmetric encryption to create a seamless, frictionless, and secure environment.
Open Authenticator by Skyost
This app generates Time-Based One-Time Passwords (TOTPs) to enhance online account security through two-factor authentication. It offers cross-platform syncing, a self-hostable backend, and an intuitive interface for managing your security codes.
- Generates Time-Based One-Time Passwords (TOTPs)
- Enhances online account security with 2FA
- Cross-platform token syncing
- Self-hostable backend option
- Fast and easy-to-use interface
- Open-source and free for local use
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PROTECT YOUR ONLINE ACCOUNTS WITH OPEN AUTHENTICATOR Open Authenticator generates Time-Based One-Time Passwords (TOTPs), which serve as the second factor in the 2FA process. These temporary codes are valid for a short period of time and are used alongside your password to verify your identity when logging into your accounts. This significantly enhances the security of your online accounts and protects them from unauthorized access. KEY FEATURES - Open-Source & Free to use : Our commitment to transparency and security means our app is open-source and will always remain free for local use. If it doesn't cost anything for us, then it shouldn't cost anything for you ! - Cross-Platform Compatibility : Seamlessly sync your TOTP tokens across all your devices, whether you're using iOS, macOS or another platform. - Self-Hostable Backend : You can host the backend on your own server. Your data, your choice. - A lovely crafted app : Open Authenticator has been designed to be fast and easy to use. Quickly find all your TOTPs and copy them directly from the main page ! IN SUMMARY, WHY OPEN AUTHENTICATOR ? Here are the reasons why you should download Open Authenticator : - Enhanced Security : Protect your online accounts from unauthorized access with strong 2FA. - User-Friendly Interface : Intuitive design makes it easy to add, manage, and organize your TOTP tokens. - Continuous Improvement : We're dedicated to delivering the best user experience and regularly update our app with new features and improvements. LINKS - Check it out on Github : https://github.com/openauthenticator-app/openauthenticator - Visit our website : https://openauthenticator.app LEGAL - Privacy policy : https://openauthenticator.app/privacy-policy - Terms of service : https://openauthenticator.app/terms-of-service
Screenshots
Verdict
The clearest difference is rating: Blue2Factor at 5.0 against Open Authenticator by Skyost's 4.4. Blue2Factor also leads on in-app purchases (none vs 2). Open Authenticator by Skyost's advantage is update cadence (fortnightly vs every 2 months) and ratings volume (9 vs 1). On price, ads, device support and iOS requirement 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. Open Authenticator by Skyost sells 2 in-app purchases, starting at $0.99 per month. Blue2Factor asks for nothing beyond the download.
Blue2Factor holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Open Authenticator by Skyost has 9 ratings behind it against 1, so its average is the more settled of the two.
Blue2Factor ships an update every 2 months, Open Authenticator by Skyost fortnightly. The most recent releases landed on October 1, 2026 and September 28, 2026 respectively.
| Parameter | Blue2Factor | Open Authenticator by Skyost |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.4 (9 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Christopher McLain | Hugo Delaunay |
Customer experience
Blue2Factor
Open Authenticator by Skyost
In-app purchases
Blue2Factor
No in-app purchases
Open Authenticator by Skyost
- Contributor Plan: Monthly$0.991 Month
- Contributor Plan: Annual$9.991 Year
Questions
Is Blue2Factor free?
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