Comparison

Yubico Authenticator vs addy.io extension

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

Head to head
About

Yubico Authenticator

Secure your online accounts with hardware-backed two-factor authentication. Store unique credentials on a physical security key, eliminating the need to store sensitive data on your mobile device. Generate verification codes without an internet connection for enhanced account protection.

Highlights
  • Hardware-backed security key storage
  • Touch or NFC authentication
  • USB-C support
  • Biometric unlock (FaceID/TouchID)
  • QR code setup
  • User presence verification
  • Smart Card support
Read full description

Store your unique credentials on a hardware-backed security key and take it wherever you go from mobile to desktop. No more storing sensitive secrets on your mobile phone, leaving your account vulnerable to takeovers. With the Yubico Authenticator you can raise the bar for security. * The Yubico Authenticator will work with any USB, Lightning, or NFC-enabled YubiKeys. * As iPads do not have NFC, they will only work through a Lightning or USB connection. The Yubico Authenticator generates a code used to verify your identity as you are logging into various services. No connectivity needed! Features include: Touch or NFC Authentication - Touch the YubiKey sensor or simply tap a YubiKey with NFC to a mobile phone that is NFC-enabled to store your credential on the YubiKey USB-C support - Connect the YubiKey 5Ci or any USB-C type YubiKey. When prompted, depending on the key, touch the contacts on the sides of the key or the golden ring on the top Biometric support - Experience greater convenience by unlocking your YubiKey with FaceID or TouchID Easy Setup - QR codes available from the services you wish to protect with strong authentication User Presence - New codes generated with just a touch or NFC tap of the YubiKey Compatible - Secure all the services currently compatible with other Authenticator apps Secure - Hardware-backed strong two-factor authentication with secret stored on the YubiKey, not on the mobile device Versatile - Support for multiple work and personal accounts Portable - Get the same set of codes across our other Yubico Authenticator apps for desktops as well as for all leading mobile platforms Flexible - Support for time-based and counter-based code generation Smart Card - Support for Apple's CryptoTokenKit Extension making it possible to use certificates stored on your YubiKey to authenticate with other apps and sites Experience security the modern way with the Yubico Authenticator. Visit yubico.com to learn more.

About

addy.io extension

Features
Read full description

Open-source Anonymous Email Forwarding, create unlimited email aliases for free This extension makes it quick and easy to view, search, manage and create new aliases. Please Note: The free plan is currently limited to a total of 10 active shared domain aliases (e.g. *@anonaddy.me) and 10MB monthly bandwidth. You can still create unlimited standard aliases for free by giving out anything@username.anonaddy.com as your email address, the browser extension is not required to create these type of aliases. To use this extension you first need to register (https://app.addy.io/register) an account with addy.io (it's free), then you can generate an API key on the settings page. If you are self-hosting addy.io then make sure to click "change instance" and enter the location of your web app. Paste your API key in the extension to save it. Now you can simply open the extension and create a new alias for any site. Why should I use addy.io? There are a number of reasons you should consider using this service: - Protect your real email address from spam by simply deactivating/deleting aliases that receive unsolicited emails - Identify who has sold your data by using a different email address for every site - Protect your identity in the event of a data breach by making it difficult for hackers to cross-reference your accounts - Prevent inbox snooping by encrypting all inbound emails using GPG/OpenPGP encryption - Update where emails are forwarded without having to go through and change your email address for each site individually - Reply to forwarded emails anonymously without revealing your true email address This addon is open-source - https://github.com/anonaddy/browser-extension Bugs and Issues: Please report any issues at https://github.com/anonaddy/browser-extension/issues

Screenshots

Yubico Authenticator4 screens
addy.io extension3 screens

Verdict

The call

The clearest difference is device support: addy.io extension at 4 against Yubico Authenticator's 2. On price, update cadence, ads 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Yubico Authenticator ships an update monthly, addy.io extension every 4 weeks. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 9 level
Yubico Authenticator versus addy.io extension: the parameters behind the verdict, then further details
ParameterYubico Authenticatoraddy.io extension
PriceFreeFree
Rating3.7 (268 ratings) — better—
Positive reviews43.6% of reviews—
Number of ratings268 — better—
Update frequencyMonthlyEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.015.0 — better
Further details — not scored
Size4 MB7 MB
Age rating4+4+
DeveloperYubicoaddy.io

Bugs and requests

Yubico Authenticator

Reported bugs

4 issues
  • NFC not working reliably
  • Accounts disappearing after updates
  • Calculation of codes not working
  • Keyboard issues when using keys

Requested features

5 requests
  • Allow editing and rearranging of entries
  • Add support for multiple keys per account
  • Improve iPad/tablet support
  • Add dark mode option
  • Improve QR code scanning

addy.io extension

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Yubico Authenticator

No in-app purchases

None

addy.io extension

No in-app purchases

Questions

Is Yubico Authenticator free?
Yubico Authenticator is free to download, with no in-app purchases.
Is addy.io extension free?
addy.io extension is free to download, with no in-app purchases.
Do Yubico Authenticator or addy.io extension have ads?
Neither Yubico Authenticator nor addy.io extension shows ads.
Which is updated more often, Yubico Authenticator or addy.io extension?
Yubico Authenticator ships an update monthly, and addy.io extension every 4 weeks. Most recently, Yubico Authenticator was updated on October 16, 2026 and addy.io extension on October 7, 2026.

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