Comparison

Lumo AI by Proton vs AxCrypt Encryption

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

Head to head
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

About

AxCrypt Encryption

Securely encrypt and decrypt sensitive files, passwords, and personal data with military-grade AES-256 encryption. Access and share protected content across cloud services and devices, with a built-in password manager for added peace of mind.

Highlights
  • AES-256 file encryption
  • Cloud storage integration
  • Secure file sharing
  • Built-in password manager
  • Cross-platform access
  • User-friendly interface
Features
Read full description

AxCrypt is an award-winning encryption app trusted by millions of users in over 100 countries to protect their files, passwords, photos, and messages. Named PCMag's Best Encryption Software for nine consecutive years since 2016, AxCrypt delivers military-grade AES-256 security with the simplicity anyone can use. Encrypt files on your phone and in the cloud Lock any file — documents, spreadsheets, photos — and sync it safely to Google Drive, Dropbox, OneDrive, or iCloud. Encrypted files stay protected wherever they go, and open instantly on any device where you're signed in. Secured Folders Choose a folder and AxCrypt watches it automatically. Files decrypt when you need them and re-encrypt the moment you sign out — no manual steps required. Password Manager Store passwords, card details, and private notes in an encrypted vault that only you can unlock. Protected by the same AES-256 encryption as your files. Secure Messenger Send and receive end-to-end encrypted messages with other AxCrypt users. Private conversations with no metadata collected. Photo Vault Keep sensitive photos and videos hidden behind biometric lock. They never appear in your camera roll or gallery. Key Sharing Collaborate without compromising security. Share decryption access with specific contacts and revoke it any time. Secure your files across your devices One subscription keeps your files protected and synced across your devices. Start securing files on your iPhone or iPad and seamlessly pick up where you left off wherever you continue your work. AxCrypt uses a zero-knowledge architecture — your password never leaves your device, and AxCrypt never has access to your files. Download AxCrypt today and start your 14-day free trial of all Premium features. Terms of Use: https://axcrypt.net/information/terms-of-use/

Screenshots

Lumo AI by Proton4 screens
AxCrypt Encryption4 screens

Verdict

The call

The clearest difference is rating: AxCrypt Encryption at 4.8 against Lumo AI by Proton's 3.9. AxCrypt Encryption also leads on update cadence (every 4 days vs every 11 days) and device support (4 vs 2). Lumo AI by Proton's advantage is ratings volume (553 vs 5). On price, ads, in-app purchases and monetization model 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 and AxCrypt Encryption sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

AxCrypt Encryption holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Lumo AI by Proton has 553 ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Lumo AI by Proton ships an update every 11 days, AxCrypt Encryption every 4 days. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Lumo AI by Proton versus AxCrypt Encryption: the parameters behind the verdict, then further details
ParameterLumo AI by ProtonAxCrypt Encryption
PriceFreeFree
Rating3.9 (553 ratings)4.8 (5 ratings) — better
Positive reviews45.9% of reviews—
Number of ratings553 — better5
Update frequencyEvery 11 daysEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS17.615.0 — better
Further details — not scored
Size103 MB224 MB
Age rating4+4+
DeveloperProton AGAxCrypt AB

Customer experience

Lumo AI by Proton

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

AxCrypt Encryption

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

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

AxCrypt Encryption

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Lumo AI by Proton

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

AxCrypt Encryption

Subscriptions2
  • AxCrypt Premium Monthly14 Days trial$5.991 Month
  • AxCrypt Premium Yearly14 Days trial$59.991 Year

Questions

Is Lumo AI by Proton free?
Lumo AI by Proton is free to download, with in-app purchases available.
Is AxCrypt Encryption free?
AxCrypt Encryption is free to download, with in-app purchases available.
Which has better reviews, Lumo AI by Proton or AxCrypt Encryption?
AxCrypt Encryption is rated higher. Lumo AI by Proton averages 3.9 out of 5 from 553 ratings, while AxCrypt Encryption averages 4.8 from 5 ratings.
Do Lumo AI by Proton or AxCrypt Encryption have ads?
Neither Lumo AI by Proton nor AxCrypt Encryption shows ads.
Which is updated more often, Lumo AI by Proton or AxCrypt Encryption?
Lumo AI by Proton ships an update every 11 days, and AxCrypt Encryption every 4 days. Most recently, Lumo AI by Proton was updated on October 24, 2026 and AxCrypt Encryption on October 24, 2026.

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