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

Fast and knowledgeable, I've been using Lumo as a way to learn about the background, social and political to The Battle of Hastings. I've been able to get excellent, detailed and clear English responses to all my questions and musings around this historical period. Really easy to use in its text-based form. I've not had a chance to try anything else yet. So far, so good. 4-stars and it could be 5-stars but I need to use it for a while. Impressive, frankly.

still has a lot of catching up to do. things like web search and deep thinking, in addition to some basic quality of life features like pressing the enter sending the text instead of starting a new paragraph or a dark mode. but it does what it's trying to do, keeping you safe. it's the only one that doesn't require login and has a private mode. edit: ok it seems to have a web search but it's bugged and doesn't work most of the time.

It's okay but I'm somewhat disappointed that this is just a frame of the web version. It can't generate images and you can't directly send photos from your camera without going into your camera app, taking a photo, opening Lumo again, opening the selection menu, and finding the photo. Right now it's very barebones and I wouldn't recommend it. Please Proton, make this review outdated.