Comparison

Yubico Authenticator vs Lumo AI by Proton

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

Lumo AI by Proton

This AI assistant prioritizes your privacy, offering help with productivity, curiosity, and staying informed. Developed by the team behind trusted encrypted services, it ensures your data remains secure.

Highlights
  • Privacy-first AI assistant
  • Boost productivity
  • Satisfy curiosity
  • Stay informed
  • Secure data handling
Read full description

Lumo is a zero-access encrypted AI assistant that keeps every conversation private. Your data is never logged, shared, or used to train models. Your chats are yours, and yours alone. Built by Proton, the privacy brand trusted by over 100 million people and the team behind Proton Mail, VPN, Drive, and Pass. THOUGHTFUL HELP FOR ANY TASK Lumo handles everything from quick questions to more complex work. Choose Fast for quick answers or Thinking for multi-step reasoning. FAST, POWERFUL WEB SEARCH Get precise, real-time answers in seconds. Lumo cites live sources so you can verify facts, dig deeper, and stay current on news, events, financial data, and more. CREATE AND REFINE IMAGES AND FILES Work with images and files just by telling Lumo what you need, from generating and editing images to analyzing documents. Connect your Proton Drive account for seamless access to stored files. AI THAT EVOLVES OVER TIME Lumo gets better every time you use it. Memory retains context and preferences across sessions, and you can set tones and styles to get the exact Lumo experience you want. STAY PRODUCTIVE AND ORGANIZED Projects give you dedicated encrypted spaces for tasks that span multiple chats, files, and instructions, while Custom Lumos let you create assistants tailored for specific tasks. Switch between light and dark modes for a more comfortable experience throughout the day. GHOST MODE For conversations where you want maximum privacy, choose Ghost Mode. Chats are instantly deleted once you close them for greater peace of mind. PRIVACY YOU CAN VERIFY Lumo is founded on zero-access encryption with no server-side chat logs, and never uses your data for profit or model training. Like all Proton products, Lumo is built and hosted in Europe and is fully open-source. Lumo helps you stay productive, curious, and informed — without ever compromising your privacy. Start a confidential chat for free today. For more information, visit our website: https://lumo.proton.me/about Terms of service: https://lumo.proton.me/legal/terms Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Our open-source code base: https://github.com/ProtonLumo/ios-lumo

Screenshots

Yubico Authenticator4 screens
Lumo AI by Proton4 screens

Verdict

The call

The clearest difference is in-app purchases: Yubico Authenticator at none against Lumo AI by Proton's 2. Lumo AI by Proton's advantage is update cadence (every 11 days vs monthly). On price, rating, review sentiment and ratings volume 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. Lumo AI by Proton sells 2 in-app purchases, starting at $12.99 per month. Yubico Authenticator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Lumo AI by Proton holds the better App Store score, 3.8 against 3.7. Both are backed by a comparable volume of ratings — 287 and 560 respectively. Written reviews point the same way: 43% of Yubico Authenticator's written reviews are positive against 46% of Lumo AI by Proton's.

UpkeepUpdate frequency

Yubico Authenticator ships an update monthly, Lumo AI by Proton every 11 days. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 7 level
Yubico Authenticator versus Lumo AI by Proton: the parameters behind the verdict, then further details
ParameterYubico AuthenticatorLumo AI by Proton
PriceFreeFree
Rating3.7 (287 ratings)3.8 (560 ratings) — better
Positive reviews42.5% of reviews45.9% of reviews — better
Number of ratings287560 — better
Update frequencyMonthlyEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size4 MB103 MB
Age rating4+4+
DeveloperYubicoProton AG

Customer experience

Yubico Authenticator

All ratings268 ratings
Positive64.9%
Neutral6.7%
Negative28.4%
Written reviews322 reviews
Positive42.5%
Neutral11.8%
Negative45.7%

Lumo AI by Proton

All ratings547 ratings
Positive67.5%
Neutral10.4%
Negative22.1%
Written reviews575 reviews
Positive45.9%
Neutral18.3%
Negative35.8%

User reviews

Yubico Authenticator

From 287 App Store ratings

What we love

  • 🚀 Works well with Yubikey
  • 🔒 Secure storage of OATH secrets
  • 👍 Simple and easy to use
  • 🚀 NFC support added

Room to improve

  • 🐛 NFC not working on some devices
  • 🐛 Clunky UI for password-protected keys
  • 🐛 Crashes and freezes reported
  • 🐛 Incompatible with some devices (iPad, older iPhones)

Lumo AI by Proton

From 560 App Store ratings

What we love

  • 👍 Sophisticated knowledge base
  • 🚀 Rapid evolution with quality
  • 💡 Potential for vision-enabled model

Room to improve

  • 🐛 Inability to answer basic questions
  • 🔒 Privacy concerns with data processing
  • 🐛 Inconsistent responses
  • 🐛 Frequent sign-outs
  • 🐛 Dark mode issues

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

Lumo AI by Proton

Reported bugs

2 issues
  • Slow sign-in page
  • Lack of real-time data access

Requested features

5 requests
  • Dynamic Type support for adjustable font size
  • Secure access to Proton Drive files
  • Ghost mode to ensure no chat history is saved
  • Intuitive history clearing option
  • App mode

In-app purchases

None

Yubico Authenticator

No in-app purchases

2 purchases

Lumo AI by Proton

Subscriptions2
  • Lumo Plus (1 month)$12.991 Month
  • Lumo Plus (12 months)$119.991 Year

Questions

Is Yubico Authenticator free?
Yubico Authenticator is free to download, with no in-app purchases.
Is Lumo AI by Proton free?
Lumo AI by Proton is free to download, with in-app purchases available.
Which has better reviews, Yubico Authenticator or Lumo AI by Proton?
Lumo AI by Proton is rated higher. Yubico Authenticator averages 3.7 out of 5 from 287 ratings, while Lumo AI by Proton averages 3.8 from 560 ratings.
Do Yubico Authenticator or Lumo AI by Proton have ads?
Neither Yubico Authenticator nor Lumo AI by Proton shows ads.
Which is updated more often, Yubico Authenticator or Lumo AI by Proton?
Yubico Authenticator ships an update monthly, and Lumo AI by Proton every 11 days. Most recently, Yubico Authenticator was updated on November 3, 2026 and Lumo AI by Proton on November 7, 2026.

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