Comparison

Passkeys App 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

Passkeys App

This app offers a secure and simple way to log into your accounts without passwords. It uses biometric authentication like Face ID or Touch ID for quick setup and effortless sign-ins, providing next-generation security and phishing protection.

Highlights
  • Passwordless sign-ins
  • Biometric authentication (Face ID/Touch ID)
  • Encrypted data storage
  • Encrypted backups
  • Cross-device synchronization
  • Phishing-proof security
Features
Read full description

Passkeys is the app that revolutionizes sign-ins for ultimate security and simplicity. Say goodbye to passwords forever! With Passkeys App, creating and using a passkey is as quick and easy as a breeze. Use Face ID or Touch ID for one-step account creation and effortless sign-ins. Features: - Strong, Secure & Private Each Passkey is inherently strong, never guessable, reused, or weak, guaranteeing top-notch protection for your accounts. All data stored in Passkeys App is encrypted, even when stored in iCloud, ensuring that only you can access your data. - Encrypted Backup In Passkeys App, you can create secure encrypted backups, providing peace of mind in case you lose your device or switch to a new one. - Synchronization Across all Devices Passkeys App automatically synchronize your accounts across all Apple devices for seamless access. - Next-Generation Security Built on FIDO Alliance and W3C standards, Passkeys replace traditional passwords with cryptographic key pairs, offering unmatched security. - Phishing-Proof Passkeys are uniquely tied to the app or website they were created for, protecting users from falling victim to fraudulent apps or websites. - And many, many other features! We constantly improve our app, don't hesitate to contact us at support@2stable.com to request a missing feature or an improvement. A subscription is required to add more than 2 accounts and unlock unlimited usage. Links Terms of Service: https://passkeys.2stable.com/terms-of-service/ Privacy: https://passkeys.2stable.com/privacy-policy/

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

Passkeys App4 screens
Duo Authenticator4 screens

Verdict

The call

The clearest difference is review sentiment: Passkeys App at 87% against Duo Authenticator's 50%. Passkeys App also leads on rating (4.7 vs 4.2) and ads (none vs shown). On price, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Passkeys App sells 3 in-app purchases, starting at $2.99 per 7 days and Duo Authenticator sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Passkeys App holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Passkeys App has 973 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 87% of Passkeys App's written reviews are positive against 50% of Duo Authenticator's.

UpkeepUpdate frequency

Passkeys App ships an update fortnightly, Duo Authenticator monthly. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
Passkeys App versus Duo Authenticator: the parameters behind the verdict, then further details
ParameterPasskeys AppDuo Authenticator
PriceFreeFree
Rating4.7 (973 ratings) — better4.2 (24 ratings)
Positive reviews87.4% of reviews — better50.0% of reviews
Number of ratings973 — better24
Update frequencyFortnightly — betterMonthly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.016.6 — better
Further details — not scored
Size82 MB60 MB
Age rating4+4+
Developer2StablePetr Polasek

Customer experience

Passkeys App

All ratings973 ratings
Positive93.1%
Neutral3.5%
Negative3.4%
Written reviews87 reviews
Positive87.4%
Neutral0.0%
Negative12.6%

Duo Authenticator

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

Bugs and requests

Passkeys App

Reported bugs

2 issues
  • Login screen freezes
  • Incompatibility with certain apps

Requested features

5 requests
  • Dark mode option
  • More customization settings
  • Additional security features
  • Enhanced password generator
  • Improved mobile app stability

Duo Authenticator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Passkeys App

Subscriptions3
  • Passkeys3 Days trial$2.997 Days
  • Passkeys$5.991 Month
  • Passkeys$19.991 Year
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 Passkeys App free?
Passkeys App is free to download, with in-app purchases available.
Is Duo Authenticator free?
Duo Authenticator is free to download, with in-app purchases available.
Which has better reviews, Passkeys App or Duo Authenticator?
Passkeys App is rated higher. Passkeys App averages 4.7 out of 5 from 973 ratings, while Duo Authenticator averages 4.2 from 24 ratings.
Do Passkeys App or Duo Authenticator have ads?
Duo Authenticator shows ads; Passkeys App does not.
Which is updated more often, Passkeys App or Duo Authenticator?
Passkeys App ships an update fortnightly, and Duo Authenticator monthly. Most recently, Passkeys App was updated on October 12, 2026 and Duo Authenticator on October 9, 2026.

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