Lumo by Proton

Productivity
3.2
Lumo by Proton
Lumo by ProtonLumo by ProtonLumo by ProtonLumo by ProtonLumo by ProtonLumo by Proton

Installs

100,000+

Price

Free

Developers

Proton AG

Content Rating

Everyone

Android Version

10

Version

1.2.6-gms

Lumo by Proton APP Download

Introducing Lumo by Proton, a privacy-first AI assistant developed by the team behind trusted tools such as Proton's encrypted email, VPN, and password manager. With a commitment to user confidentiality, this app is designed to help you stay productive, curious, and informed without compromising your personal data.

Lumo stands out from the crowded field of AI assistants by prioritizing your privacy. Unlike many other technology companies, Proton ensures that your chats are encrypted and not used for training the AI, making it a safe choice for those who value their digital security. The app is user-friendly, allowing you to start a confidential chat quickly.

Despite its strong privacy features, Lumo has received mixed reviews and some user complaints regarding functionality. While many appreciate its capabilities, others have experienced issues with file uploads and incorrect responses. Proton is actively working to address these concerns and improve the app's performance.

In conclusion, if you are in search of a privacy-respecting AI assistant that offers a clean and secure way to explore your queries, Lumo by Proton is worth a try. Just keep in mind that it is still evolving, and user feedback is crucial in shaping its future updates.

User Reviews from Google Play Store

Jonnah jd

Jonnah jd

Mar 1, 2026
(3)

Where's the 1.3 version???

A Google user

A Google user

Mar 1, 2026
(1)

horrible

Version: 1.2.16-gms

Steven Jenkins

Steven Jenkins

Feb 28, 2026
(2)

Everything is slooooooow. Opening the app takes 5 to 10 seconds, getting responses takes 10 to 20 seconds. That alone is enough for me to not use the app. I have several other AI assistant apps installed and none of them are anywhere near as slow as Lumo. I can open and get a response from the other AI's before Lumo even finishes opening. This app ain't it.

Version: 1.2.16-gms

Cid Kageno

Cid Kageno

Feb 28, 2026
(5)

he's a good kitty and super cute in a ghost outfit. plus he no talk about what you ask. so no " delete my history " moment before you are reborn as a slime.

Version: 1.2.16-gms

Emre

Emre

Feb 27, 2026
(1)

Proton markets itself as privacy-first, but the experience tells a different story. Linux support is weak for a company targeting privacy-focused users. After changing my password, all sessions were logged out and I got locked out of my own account. The recovery process restored access, but all my data was wiped. Years of data gone. Yes, they’re “very very secure.” So secure that one mistake can permanently erase everything. Privacy shouldn’t mean zero margin for error.

Version: 1.2.16-gms

Pros

Privacy-first approach
User-friendly interface
Strong reputation for security
Ongoing improvements based on user feedback

Cons

Issues with file uploads
Some responses may be inaccurate
Limited functionality compared to other AI assistants
Lumo by Proton

Lumo by Proton

Productivity
3.2

Available Versions

Lumo by Proton

Version 1.2.6-gms

53 MB

APK
Download
Download onGoogle Play

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