Lumo by Proton

Proton AG

In-app purchases

About this app

Ask anything. It’s confidential.

Meet Lumo, the privacy-first AI assistant created by Proton, the team behind encrypted email, VPN, password manager, and cloud storage trusted by over 100 million people.

Lumo helps you stay productive, curious, and informed — without ever compromising your privacy.

Start a confidential chat today.

Ratings and reviews

EDIT: upon reinstalling the app, it loaded correctly after it attempted reloading a couple of times by itself (which is what it did last time, but failed/crashed). now to review the actual product, i've generally enjoyed it, but i'm disappointed with the limit on how long inactive chats last. i didn't expect to lose any, but i did, which is sad. i personally think they should last for at least 30 days (a month) for free members, rather than just 7 days (a week) as another review suggests

Generally seems pretty good, and it appears that the team is making quick improvements. However the weekly prompt limit on the free tier isn't very generous. It would be great if there were additional tiers for existing proton subscribers to further try it, before adding another subscription... especially with other free semi-private options like duck.ai that don't appear to impose any limits.

I love Lumo, the only problem I have with it is when I get a response generated it will finish it but then it will remove the response and give me the screen that says it didn't go through due to a connection error but I'm connected to a great connection and even over my data it will do the same thing (it never does this on the web browser but I use the mobile version much more), once that gets fixed then I can give it 5 stars since I do really love Lumo as it's my main Ai

What’s new

Paws what you’re doing and check out the latest Lumo Android upgrade—now it lands on its feet every time (stability that’s fur‑real) and finally understands your meows with purr‑fect speech‑to‑text. 😺📱✨