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.

Edit: Lumo has improved a lot, but there are still mistakes, and a high price for what you get. I'm on a duo plan as of now, and hope that there will be adjustments to lumo for paying users. First review: Lots of mistakes, fails to answer, requires additional subscription to protons unlimited plan for unlimited access, very high price compared to what you get.

What’s new

Stability and speech to text improvements