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

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.

Great privacy respecting ai app. Saw a lot of people hating on it in the reviews so I thought id drop a positive review. One of the few ais I could find that doesnt sell off all your data, absolute godsend. A little slower than other ais but that's to be expected with protons much lesser resources than open ai and whatnot

I genuinely like Lumo a lot. The UI is easy to navigate, Lumo is customizable, and Lumo is genuinely a pleasure to talk to. I still use Gemini as my go-to AI, mainly because it's integrated with Google Keep, Google Maps, my phone's Clock app, etc. I wish Lumo could somehow integrate into other apps like that and be activated with the power button like Gemini. I also wish Lumo had a voice and could be voice-activated and spoken to. I like Gemini, but Lumo respects privacy better. :)

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. 😺📱✨