Comparison

Open Authenticator by Skyost vs Authenticator 2FA, MFA, OTP

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

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

Authenticator 2FA, MFA, OTP

Secure your online accounts with a fast and easy two-factor authentication app. It supports quick setup via QR code scanning, Face ID, and includes a built-in password manager for auto-filling credentials. Compatible with all major 2FA-enabled platforms.

Highlights
  • Quick setup with QR code scanning
  • Face ID support
  • Built-in password manager
  • AutoFill capabilities
  • Compatible with major 2FA platforms
Features
Read full description

Authenticator 2FA, MFA, OTP – Simple, Secure 2FA Protect your accounts with a fast and easy two-factor authentication (2FA) app. Scan QR codes and manage time-based one-time passwords (TOTP) for all your supported services. Key Features: - Quick setup with QR code scanning - Face ID support - Built-in password manager & AutoFill - Compatible with all major 2FA-enabled platforms Premium Access: Unlock all features with a premium subscription. Some tools and advanced options are available only to premium users. Subscription Terms: Payment charged to your iTunes account at confirmation Auto-renews unless canceled 24h before renewal Manage or cancel in Account Settings Download Authenticator app today and take control of your security. Privacy Policy: https://sites.google.com/view/authenticator2famfaotp/privacy-policy Terms of Service: https://sites.google.com/view/authenticator2famfaotp/terms-of-service Support: support@velari.site

Screenshots

Open Authenticator by Skyost3 screens
Authenticator 2FA, MFA, OTP4 screens

Verdict

The call

Open Authenticator by Skyost and Authenticator 2FA, MFA, OTP both sit at 4.4 stars, but that hides the real split: 100% of Authenticator 2FA, MFA, OTP's written reviews are positive against 0% of Open Authenticator by Skyost's. Authenticator 2FA, MFA, OTP also leads on ratings volume (128 vs 9). Open Authenticator by Skyost's advantage is iOS requirement (15.0 vs 17.6). On price, rating, update cadence and ads 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. Open Authenticator by Skyost sells 2 in-app purchases, starting at $0.99 per month and Authenticator 2FA, MFA, OTP sells 9 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Open Authenticator by Skyost against 4.5 for Authenticator 2FA, MFA, OTP. That said, the two scores are not equally well evidenced: Authenticator 2FA, MFA, OTP has 128 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 0% of Open Authenticator by Skyost's written reviews are positive against 100% of Authenticator 2FA, MFA, OTP's.

UpkeepUpdate frequency

Open Authenticator by Skyost ships an update fortnightly, Authenticator 2FA, MFA, OTP every 2 weeks. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
Open Authenticator by Skyost versus Authenticator 2FA, MFA, OTP: the parameters behind the verdict, then further details
ParameterOpen Authenticator by SkyostAuthenticator 2FA, MFA, OTP
PriceFreeFree
Rating4.4 (9 ratings)4.5 (128 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings9128 — better
Update frequencyFortnightly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, Apple Watch
Requires iOS15.0 — better17.6
Further details — not scored
Size56 MB118 MB
Age rating4+4+
DeveloperHugo DelaunayMaksym Holoborodko

Customer experience

Open Authenticator by Skyost

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Authenticator 2FA, MFA, OTP

All ratings128 ratings
Positive85.9%
Neutral4.7%
Negative9.4%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Open Authenticator by Skyost

Subscriptions2
  • Contributor Plan: Monthly$0.991 Month
  • Contributor Plan: Annual$9.991 Year
9 purchases

Authenticator 2FA, MFA, OTP

Subscriptions7
  • Unlock all features7 Days trial$2.997 Days
  • Unlock all features3 Days trial$9.997 Days
  • Unlock all features$9.997 Days
Show 4 more
  • Unlock all features$19.991 Year
  • Unlock all features$59.991 Year
  • Unlock all features$69.991 Year
  • Unlock all features$79.991 Year
One-time2
  • Unlock all features$69.99
  • Unlock all features$99.99

Questions

Is Open Authenticator by Skyost free?
Open Authenticator by Skyost is free to download, with in-app purchases available.
Is Authenticator 2FA, MFA, OTP free?
Authenticator 2FA, MFA, OTP is free to download, with in-app purchases available.
Which has better reviews, Open Authenticator by Skyost or Authenticator 2FA, MFA, OTP?
Authenticator 2FA, MFA, OTP is rated higher. Open Authenticator by Skyost averages 4.4 out of 5 from 9 ratings, while Authenticator 2FA, MFA, OTP averages 4.5 from 128 ratings.
Do Open Authenticator by Skyost or Authenticator 2FA, MFA, OTP have ads?
Neither Open Authenticator by Skyost nor Authenticator 2FA, MFA, OTP shows ads.
Which is updated more often, Open Authenticator by Skyost or Authenticator 2FA, MFA, OTP?
Open Authenticator by Skyost ships an update fortnightly, and Authenticator 2FA, MFA, OTP every 2 weeks. Most recently, Open Authenticator by Skyost was updated on September 10, 2026 and Authenticator 2FA, MFA, OTP on September 21, 2026.

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