# Yubico Authenticator vs Lumo AI by Proton

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.

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.

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.

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.

## The numbers

| Metric | Yubico Authenticator | Lumo AI by Proton |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (287 ratings)](https://appshunter.io/ios/app/yubico-authenticator/id1476679808/reviews) | **[3.8 (560 ratings)](https://appshunter.io/ios/app/lumo-ai-by-proton/id6746714949/reviews)** |
| Number of ratings | 287 | **560** |
| Positive reviews | 42.5% of reviews | **45.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 103 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yubico](https://appshunter.io/developer/586890748) | [Proton AG](https://appshunter.io/developer/979659484) |

## What reviewers say

### Yubico Authenticator

[App page](https://appshunter.io/ios/app/yubico-authenticator/id1476679808)

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

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/lumo-ai-by-proton/id6746714949)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lumo Plus (1 month) | $12.99 | per month |
| Lumo Plus (12 months) | $119.99 | per year |

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- Slow sign-in page
- Lack of real-time data access

**Requested features**

- 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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*