Comparison

Open Authenticator by Skyost vs Authenticator App-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 App-2FA・MFA・OTP

Enhance your online security by generating time-based one-time passcodes for two-factor authentication. Securely manage multiple accounts with effortless setup, biometric integration, and cloud backups. Enjoy a sleek interface with cross-device syncing for ultimate convenience.

Highlights
  • Multiple account support
  • QR code scanning for setup
  • Face ID/Touch ID integration
  • Cloud backups via iCloud
  • Dark mode interface
  • Cross-device synchronization
Features
Read full description

Secure Your Digital Life with Our Authenticator App Our Authenticator app is designed to provide you with a seamless and secure two-factor authentication (2FA) experience. Safeguard your online accounts from unauthorized access by generating time-based one-time passcodes (TOTP) that add an extra layer of protection to your login process. Key Features: - Multiple Account Support: Easily manage and secure all your accounts in one place, from social media to financial services. - Effortless Setup: Quickly add accounts by scanning QR codes or manually entering details. - Face ID and Touch ID Integration: Use biometric authentication for quick and secure access to your codes. - Cloud Backups: Ensure you never lose access to your codes with secure backups on iCloud. - Dark Mode: Enjoy a sleek, eye-friendly interface designed for low-light environments. - Cross-Device Sync: Seamlessly sync your codes across multiple devices for maximum convenience. Whether you're protecting your email, social media, or online banking, our Authenticator app is your trusted companion for enhanced security. Terms of Use: https://authenticator2.com/terms Privacy Policy: https://authenticator2.com/policy

Screenshots

Open Authenticator by Skyost3 screens
Authenticator App-2FA・MFA・OTP4 screens

Verdict

The call

Open Authenticator by Skyost and Authenticator App-2FA・MFA・OTP both sit at 4.4 stars, but that hides the real split: 69% of Authenticator App-2FA・MFA・OTP's written reviews are positive against 0% of Open Authenticator by Skyost's. Authenticator App-2FA・MFA・OTP also leads on ratings volume (690 vs 9) and chart position (#123 vs unranked). Open Authenticator by Skyost's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.6). On price, rating, update cadence and in-app purchases 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 App-2FA・MFA・OTP sells 8 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Authenticator App-2FA・MFA・OTP holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Authenticator App-2FA・MFA・OTP has 690 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 0% of Open Authenticator by Skyost's written reviews are positive against 69% of Authenticator App-2FA・MFA・OTP's.

UpkeepUpdate frequency

Open Authenticator by Skyost ships an update fortnightly, Authenticator App-2FA・MFA・OTP every 9 days. Both last shipped on October 14, 2026.

Scorecard5 real differences · 6 level
Open Authenticator by Skyost versus Authenticator App-2FA・MFA・OTP: the parameters behind the verdict, then further details
ParameterOpen Authenticator by SkyostAuthenticator App-2FA・MFA・OTP
PriceFreeFree
Rating4.4 (9 ratings)4.6 (690 ratings) — better
Positive reviews0.0% of reviews68.9% of reviews — better
Number of ratings9690 — better
Update frequencyFortnightlyEvery 9 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#123 — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, Apple Watch
Requires iOS15.0 — better17.6
Further details — not scored
Size56 MB153 MB
Age rating4+4+
DeveloperHugo DelaunayFLOOMIX LTD

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 App-2FA・MFA・OTP

All ratings690 ratings
Positive88.4%
Neutral4.9%
Negative6.7%
Written reviews132 reviews
Positive68.9%
Neutral6.8%
Negative24.2%

In-app purchases

2 purchases

Open Authenticator by Skyost

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

Authenticator App-2FA・MFA・OTP

Subscriptions8
  • Weekly Access3 Days trial$5.997 Days
  • Weekly Access3 Days trial$9.997 Days
  • Weekly Access$9.997 Days
Show 5 more
  • Yearly Access$49.991 Year
  • Yearly Access$59.991 Year
  • Yearly Access3 Days trial$59.991 Year
  • Yearly Access$69.991 Year
  • Yearly Access3 Days trial$69.991 Year

Questions

Is Open Authenticator by Skyost free?
Open Authenticator by Skyost is free to download, with in-app purchases available.
Is Authenticator App-2FA・MFA・OTP free?
Authenticator App-2FA・MFA・OTP is free to download, with in-app purchases available.
Which has better reviews, Open Authenticator by Skyost or Authenticator App-2FA・MFA・OTP?
Authenticator App-2FA・MFA・OTP is rated higher. Open Authenticator by Skyost averages 4.4 out of 5 from 9 ratings, while Authenticator App-2FA・MFA・OTP averages 4.6 from 690 ratings.
Do Open Authenticator by Skyost or Authenticator App-2FA・MFA・OTP have ads?
Authenticator App-2FA・MFA・OTP shows ads; Open Authenticator by Skyost does not.
Which is updated more often, Open Authenticator by Skyost or Authenticator App-2FA・MFA・OTP?
Open Authenticator by Skyost ships an update fortnightly, and Authenticator App-2FA・MFA・OTP every 9 days. Most recently, Open Authenticator by Skyost was updated on October 14, 2026 and Authenticator App-2FA・MFA・OTP on October 14, 2026.

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