Comparison

2FA Authenticator Secure vs Duo Authenticator

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

Head to head
About

2FA Authenticator Secure

Enhance your online security with this free and private two-factor authentication app. It adds an extra layer of protection to your accounts using unique time-based passwords and offers a secure vault for your files. Synchronization ensures your security is consistent across all your devices.

Highlights
  • Secure and private authentication
  • Synchronization across devices
  • Supports all online accounts
  • No passwords stored
  • Secure file vault
Features
Read full description

Authentication is made simple, free and secure. Add two step security to your online accounts. 2FA (two-factor authentication) helps you protect your account from hacker's breach by adding an additional layer of security. Protect and Secure your online accounts with unique time passwords. Keep your files in secured vault. Key Features : - Secure & Private - Synchronization across all devices. - Supports all online accounts. - No passwords stored. Privacy Policy :- https://twentyfivedegreesappsllc.wordpress.com/privacy-policy/ Terms Of Use :- https://twentyfivedegreesappsllc.wordpress.com/terms-of-use/ Please rate the app and give your feedback to help us improve and create much more unique apps for you.

About

Duo Authenticator

Enhance your online security with this multi-factor authentication app. It provides an extra layer of protection for your accounts by generating time-sensitive codes, even when offline. Secure your sensitive information with ease and peace of mind.

Highlights
  • Quick and easy setup
  • Wide service compatibility
  • Time-sensitive security codes
  • Offline code generation
  • End-to-end encryption
  • Security code protection
Features
Read full description

As cyber threats continue to become more sophisticated, it's essential to use strong and reliable security measures to protect your online accounts. That's where MFA Authenticator comes in – a mobile app designed to provide an extra layer of security to your online accounts, making it harder for hackers to gain access to your sensitive information. One of the most significant advantages of using MFA Authenticator is its ease of use. With this app, you can set up two-factor authentication (2FA) quickly, making it easy to secure your accounts. You can use MFA Authenticator with a wide range of services, including Google, Facebook, Dropbox, and many more. The app generates unique, time-sensitive codes that you can use to verify your identity when logging in to your accounts, ensuring that only you can access your information. Another great feature of MFA Authenticator is its ability to work offline. Unlike some other 2FA solutions that rely on an internet connection, MFA Authenticator can generate codes even when your phone isn't connected to the internet. This feature is particularly useful when traveling or in areas with a weak or non-existent internet connection. MFA Authenticator is also designed to be highly secure, with a range of measures in place to keep your information safe. For example, the app uses end-to-end encryption to ensure that your codes are only visible to you. Additionally, the app has a built-in security code that you need to enter when setting up the app, ensuring that only you can access your account. • Quick and easy to set up • Compatible with a wide range of services • Generates unique, time-sensitive codes for added security • Works offline, making it ideal for travel • Uses end-to-end encryption to keep your information safe • Requires a security code for added protection. Overall, MFA Authenticator is an excellent app that can help you stay safe and secure online. With its ease of use, offline functionality, and strong security features, you can rest assured that your information is well-protected. So why not give it a try and take your online security to the next level? Terms of service: https://www.code4flutter.in/terms-mfauthenticator

Screenshots

2FA Authenticator Secure4 screens
Duo Authenticator4 screens

Verdict

The call

The clearest difference is in-app purchases: 2FA Authenticator Secure at none against Duo Authenticator's 3. 2FA Authenticator Secure also leads on ads (none vs shown) and rating (4.4 vs 4.2). On price, update cadence 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. Duo Authenticator sells 3 in-app purchases, starting at $3.99 per 7 days. 2FA Authenticator Secure asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

2FA Authenticator Secure holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: 2FA Authenticator Secure has 172 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 65% of 2FA Authenticator Secure's written reviews are positive against 50% of Duo Authenticator's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

Scorecard7 real differences · 3 level
2FA Authenticator Secure versus Duo Authenticator: the parameters behind the verdict, then further details
Parameter2FA Authenticator SecureDuo Authenticator
PriceFreeFree
Rating4.4 (172 ratings) — better4.2 (24 ratings)
Positive reviews65.4% of reviews — better50.0% of reviews
Number of ratings172 — better24
Update frequencyMonthlyMonthly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better16.6
Further details — not scored
Size38 MB60 MB
Age rating4+4+
Developer25 Degrees Apps LLCPetr Polasek

Customer experience

2FA Authenticator Secure

All ratings167 ratings
Positive85.0%
Neutral4.8%
Negative10.2%
Written reviews26 reviews
Positive65.4%
Neutral11.5%
Negative23.1%

Duo Authenticator

All ratings24 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

2FA Authenticator Secure

Reported bugs

1 issue
  • Pin is not masked when typing

Requested features

1 request
  • Appropriate step-by-step instructions for first-time users

Duo Authenticator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

2FA Authenticator Secure

No in-app purchases

3 purchases

Duo Authenticator

Subscriptions3
  • Premium 1 Week$3.997 Days
  • Premium 1 Month1 Month trial$9.991 Month
  • Premium 1 Year3 Days trial$29.991 Year

Questions

Is 2FA Authenticator Secure free?
2FA Authenticator Secure is free to download, with no in-app purchases.
Is Duo Authenticator free?
Duo Authenticator is free to download, with in-app purchases available.
Which has better reviews, 2FA Authenticator Secure or Duo Authenticator?
2FA Authenticator Secure is rated higher. 2FA Authenticator Secure averages 4.4 out of 5 from 172 ratings, while Duo Authenticator averages 4.2 from 24 ratings.
Do 2FA Authenticator Secure or Duo Authenticator have ads?
Duo Authenticator shows ads; 2FA Authenticator Secure does not.
Which is updated more often, 2FA Authenticator Secure or Duo Authenticator?
2FA Authenticator Secure ships an update monthly, and Duo Authenticator monthly. Most recently, 2FA Authenticator Secure was updated on October 4, 2026 and Duo Authenticator on October 9, 2026.

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