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Lumo by Proton

by Proton AG

An AI assistant that keeps your chats private

AI assistant with no logs, zero-access encrypted saved chats and no training on user data.

Free versionLimited checks · 3 checksBeginner-friendlyBrowser · iPhone · Android
Try it via OROBO

You go to the maker’s website. OROBO earns nothing from it.

Have it set up for you instead:Request setup by OROBOOr start with the AI Compass: a written assessment at a fixed price of €490 (businesses only).

How it runs for you

Simulation starting …

Illustration, not a real test run

What you get

What you get

  1. 01No logs of your conversations
  2. 02Saved chats use zero-access encryption
  3. 03No training on your data

For you if …

  • Anyone who wants more privacy with everyday AI
  • People who already use Proton

Pick something else if …

  • For highly confidential data, a local model is the better choice

How to start

In three steps.

What you need
  • A browser or smartphone
  • A Proton account
  1. 1Open lumo.proton.me or get the app
  2. 2Sign in with your Proton account
  3. 3Chat as usual; saved chats stay encrypted

Part of these packages

Lumo by Proton works together with other software.

Use AI safely

Your team uses AI — with far less risk of data leaks or hijacked chatbots.

5 stepsone day for the basicsMedium

Safety check

Limited checks · 3 checks

3 of 3 possible checks passed. Fewer than four automated checks are possible here, so we show no trust score.

Limited checks · 3 checks
Is it maintained?
  • Website reachable
  • Prices on the maker’s site
Technical details & what we don’t check
  • Website loads fast
  • Website protection settings: 4 of 6 (website only, not the software)HSTS, CSP, nosniff, Referrer-Policy

Claims about protection come from the maker. The trust score checks public signals, not effectiveness.

We automatically check origin, code patterns, licence, maintenance and reachability — again every day. We do not check whether the software fits your purpose, how it handles your data, or whether it works without errors. Last checked 3 hours ago. How OROBO checks

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Goes well with

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Facts

AreaMake it safe
PriceFree version
Runs onBrowser, iPhone, Android
I am the maker