Comparison

Yubico Authenticator vs Flow

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

Flow

Features
Read full description

Flow is a voice agent that listens and works with you to do anything, anytime. It figures out how to help, remembers what matters to you, and reminds you before you have to ask. Talk to Flow to get work done on your commute, make plans for the weekend, buy what you need at the best price, or learn new things you're curious about. All the power of an agent, as simple and easy as a conversation. Flow is available by invitation.

Screenshots

Yubico Authenticator4 screens
Flow3 screens

Verdict

The call

The clearest difference is review sentiment: Flow at 100% against Yubico Authenticator's 43%. Flow also leads on rating (5.0 vs 3.7) and update cadence (daily vs monthly). Yubico Authenticator's advantage is ratings volume (286 vs 2) and iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Flow holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Yubico Authenticator has 286 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 43% of Yubico Authenticator's written reviews are positive against 100% of Flow's.

UpkeepUpdate frequency

Yubico Authenticator ships an update monthly, Flow daily. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Yubico Authenticator versus Flow: the parameters behind the verdict, then further details
ParameterYubico AuthenticatorFlow
PriceFreeFree
Rating3.7 (286 ratings)5.0 (2 ratings) — better
Positive reviews42.5% of reviews100.0% of reviews — better
Number of ratings286 — better2
Update frequencyMonthlyDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better26.0
Further details — not scored
Size4 MB41 MB
Age rating4+17+
DeveloperYubicoFlow Communications Inc

Customer experience

Yubico Authenticator

All ratings268 ratings
Positive64.9%
Neutral6.7%
Negative28.4%
Written reviews320 reviews
Positive42.5%
Neutral11.9%
Negative45.6%

Flow

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

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

Flow

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Yubico Authenticator

No in-app purchases

None

Flow

No in-app purchases

Questions

Is Yubico Authenticator free?
Yubico Authenticator is free to download, with no in-app purchases.
Is Flow free?
Flow is free to download, with no in-app purchases.
Which has better reviews, Yubico Authenticator or Flow?
Flow is rated higher. Yubico Authenticator averages 3.7 out of 5 from 286 ratings, while Flow averages 5.0 from 2 ratings.
Do Yubico Authenticator or Flow have ads?
Neither Yubico Authenticator nor Flow shows ads.
Which is updated more often, Yubico Authenticator or Flow?
Yubico Authenticator ships an update monthly, and Flow daily. Most recently, Yubico Authenticator was updated on October 22, 2026 and Flow on October 24, 2026.

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