Lumo AI by Proton
Lumo AI by Proton
Download on App Store

This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.

Logo of Lumo AI by Proton
Download on App Store

Lumo AI by Proton

Finally, an AI that guards your data. Lumo AI by Proton offers a shield against the pervasive data grabs of typical AI, giving users true digital autonomy.

Key Figures

Downloads

100k+

User Rating

3.9/5

Total Ratings

591

Publisher

Proton AG

Category

Productivity

Locales

11

Latest Version

1.2.9

Size

37.2 MB

First Released

Jul 23, 2025
Features

An analysis of Lumo AI's core offerings, tailored for users prioritizing digital security and data sovereignty in their AI interactions.

Lumo AI by Proton: A Privacy-Centric Evaluation

Privacy-First AI Design

The app provides an AI assistant engineered with a strong emphasis on user privacy, ensuring data protection and minimizing collection, which is a core concern for its target users.

Open-Source Transparency

This tool features an open-source code base, allowing for public scrutiny and verification of its security and data handling practices, fostering trust and transparency for privacy-conscious users.

Trusted Proton Development

It leverages the strong reputation of Proton, a trusted provider of encrypted services, offering an inherent layer of credibility and reliability for secure digital interactions.

FAQ

Frequently Asked Questions

Everything you need to know about Lumo AI by Proton

What is Lumo by Proton?

Lumo is a privacy-first AI assistant from Proton. It helps users stay productive and informed without compromising privacy, built by the team trusted by over 100 million people.

Does Lumo AI ensure user privacy?

Yes, Lumo is designed as a privacy-first AI assistant. It actively protects user data, stating all interactions are confidential, ensuring no privacy compromise.

Is Lumo by Proton an open-source application?

Yes, Lumo by Proton is an open-source application. Its code base is publicly available, promoting transparency and allowing for independent security review.

The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.

App Store

Screenshots

Lumo AI by Proton - The app prioritizes user privacy with its "confidential" chat prompts and offers immediate suggestions like "Explain a concept" and "Brainstorm ideas" to guide users.

The app prioritizes user privacy with its "confidential" chat prompts and offers immediate suggestions like "Explain a concept" and "Brainstorm ideas" to guide users.

Confidential AI Chat

Lumo AI by Proton - Users can efficiently manage their conversations through a clear history list and easily access options like "Add to favorites" or "Delete" specific chats, reinforcing the app's transparent nature.

Users can efficiently manage their conversations through a clear history list and easily access options like "Add to favorites" or "Delete" specific chats, reinforcing the app's transparent nature.

Organized Secure History

Lumo AI by Proton - This tool demonstrates its ability to securely summarize uploaded documents, such as a "Client meeting... PDF Document," providing concise insights while ensuring all chat content remains private.

This tool demonstrates its ability to securely summarize uploaded documents, such as a "Client meeting... PDF Document," providing concise insights while ensuring all chat content remains private.

Secure Document Analysis

Lumo AI by Proton - This tool empowers users with explicit control over their data, featuring clear options like "No data shared" and the ability to "Delete chat history anytime," ensuring their privacy is paramount.

This tool empowers users with explicit control over their data, featuring clear options like "No data shared" and the ability to "Delete chat history anytime," ensuring their privacy is paramount.

Empowering User Control

Lumo AI by Proton - Highlighting its European origins, this app offers secure, on-device processing for tasks like planning a "Barcelona weekend" itinerary, with a visible "On device - Private" indicator affirming data security.

Highlighting its European origins, this app offers secure, on-device processing for tasks like planning a "Barcelona weekend" itinerary, with a visible "On device - Private" indicator affirming data security.

European Privacy Standard

Lumo AI by Proton - This tool is developed by Proton, known for building a "better internet," symbolizing its commitment to a privacy-first AI embodied by the Lumo cat in a secure box and the trusted Proton branding.

This tool is developed by Proton, known for building a "better internet," symbolizing its commitment to a privacy-first AI embodied by the Lumo cat in a secure box and the trusted Proton branding.

Proton's Privacy Vision

Description

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. For more information visit our website: https://lumo.proton.me/about Terms of service: https://lumo.proton.me/legal/terms Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Our open-source code base: https://github.com/ProtonLumo/ios-lumo

Download

Download on App Store

This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.