Lumo by Proton APK

Lumo by Proton

The Private Way to Think, Create, and Do

• Lumo is the AI assistant that finally respects your boundaries.

• Built by the privacy experts at Proton, it combines high-performance intelligence with absolute confidentiality.

• Your data is never logged, monetized, or used for training—ever.

Unmatched Intelligence

• Versatile Processing: Toggle between Fast mode for instant answers and Thinking mode for complex, multi-step problem solving.

• Live Web Intelligence: Access real-time data with cited sources, ensuring you stay updated on news, finance, and facts.

• Creative Control: Generate images, edit files, and analyze documents effortlessly. Integrate your Proton Drive for seamless, secure access to your saved files.

Privacy Without Compromise

• Zero-Access Encryption: Your conversations are yours alone. With no server-side logging, your interaction remains invisible to everyone but you.

• Ghost Mode: Need total discretion? Activate Ghost Mode to ensure your chat vanishes the moment you close the session.

• Open-Source Integrity: Fully transparent and based in Europe, Lumo allows you to verify the code that protects your data.

Personalized Workflow

• Adaptive Memory: Lumo learns your preferences and tone over time, providing a more intuitive experience with every use.

• Strategic Organization: Use Projects to consolidate related tasks, documents, and instructions into one secure hub.

• Custom Assistants: Create tailored Lumos designed to handle your specific goals, from professional projects to daily routines.

Start your first confidential chat for free today

• Take control of your digital life with an AI that works for you, not against your privacy.

+ Learn more: https://lumo.proton.me/about

+ Legal & Technical:

- Terms of Service: https://lumo.proton.me/legal/terms

- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

- Open-Source Code: https://github.com/ProtonLumo/ios-lumo

FAQ

Q: How does Lumo protect my privacy during interactions?

A: Lumo utilizes Zero-Access Encryption and a strict no-logging policy, meaning your conversations are invisible to everyone except you. Because Lumo is backed by the privacy experts at Proton and is open-source, you can personally verify the code that protects your data.

Q: What is the difference between Fast mode and Thinking mode?

A: Fast mode is designed to provide immediate, snappy responses for straightforward queries, whereas Thinking mode is optimized for complex, multi-step problem solving that requires deeper logical processing. You can toggle between these modes based on the requirements of your specific task.

Q: Can Lumo access real-time information from the internet?

A: Yes, Lumo features Live Web Intelligence, which allows it to access current data, news, and financial facts. It provides cited sources for this information so you can easily verify the facts and stay updated on rapidly changing topics.

Version History

v2.0.2——15 Jul 2026

A private AI assistant by Proton Download the latest version of Lumo by Proton to enjoy new features and updates immediately!

This update improves stability and reliability:

• Fixed a blank/white screen that could appear when reopening the app

• Fixed the loading screen getting stuck on slow or unstable connections

• Your typed messages and attachments are now kept when the app is restored in the background

• Smoother loading and general performance improvements

*2.0.1

Fixed multiple bugs that were reported by the community. Thank you.

*2.0.0

Picture Purr-fect: describe it, Lumo draws it in chat. Whisker-Sharp Memory: recalls your context across chats—encrypted and yours. A

Fresh Coat of Fur: new composer, background, app icon. A Clearer Cat-alog: Lite vs Max made simple. No More Claws for Concern: instant

alerts for files Lumo can't read. A Long Tail: long chats tidy themselves.