Report updated Apr 18, 2026

Overview · Full Intel report in progress

Lumo AI by Proton is an established productivity app that is completely free. With a 3.7/5 rating from 385 reviews, it shows polarized user reception.

What is Lumo AI by Proton?

Lumo AI is a privacy-focused AI assistant developed by Proton, designed to provide productivity and information retrieval tools. It leverages the company's reputation for encrypted services to offer a secure alternative to mainstream AI models.

Current Momentum

v1.2 · 1w ago

Intense

Last updated 8d ago. 5 versions tracked.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Productivity

No ranking data

ProductivityGrossing

Rating Pulse 🇺🇸

What makes this app unique?

What Are The Key Features?

Privacy-First AIStandard

An AI assistant built with a focus on data security and user privacy by the team behind Proton's encrypted ecosystem.

Productivity AssistanceStandard

Designed to help users stay informed and productive through AI-driven interactions.

Open-Source FoundationStandard

The application utilizes an open-source code base to maintain transparency regarding its operations.

How much does it cost?

Free

Who Built It?

Proton AG app icon 1
Proton AG app icon 2
Proton AG app icon 3
Proton AG app icon 4

Proton AG

(65.4K)

Providing a privacy-first ecosystem of productivity and security tools. Enabling users to reclaim digital autonomy from big tech.

Portfolio

13

Apps

Free 12
Productivity50%
Utilities17%
Finance8%

Explore the full Proton AG report

Portfolio breakdown, audience, momentum, and every app published by Proton AG.

Go deeper

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

View the full user-sentiment analysis

Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.

Go deeper

Analysis in progress, available soon

What is the competitive landscape for Lumo AI by Proton?

Where is it available?

Localized markets (10)

United StatesBrazilGermanySpainFranceItalyMexicoNetherlandsPortugalSweden

How's The Productivity Market?

How does it evolve in the Productivity market?

Rank progression

26 active rankings tracked — 30-day window

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for Lumo AI by Proton

Key Takeaways

While users value the privacy-first approach, the app currently faces significant feedback regarding UI usability, feature parity, and technical performance compared to established competitors.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Lumo AI by Proton, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Lumo AI by Proton Intelligence Report.” Updated Apr 18, 2026. https://marlvel.ai/apps/lumo-ai-by-proton

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