Proton Lumo 1.2 Update Brings Dark Mode, Custom Writing Styles, and Enhanced Privacy Features

Proton, the Swiss privacy-oriented tech firm behind popular services such as Proton Mail and Proton VPN, has officially launched version 1.2 of its AI assistant, Lumo. The new release brings in two of the most sought-after features Dark Mode and Customizable Writing Styles, making Lumo more personalized, flexible, and user-friendly than ever.

A More Personalized Look with Dark Mode

Lumo 1.2 users now have the ability to change between light and dark themes seamlessly, so the interface can be set to either their preference or system mode. This not only helps with visual comfort for extended work sessions but also brings the design language of Lumo in line with other Proton applications to provide a cohesive ecosystem experience.

Dark Mode has become an essential preference for many users today reducing eye strain and offering a sleek, modern aesthetic. For privacy-focused users who already rely on Proton’s suite of secure apps, this update ensures consistency across platforms, whether you’re using Proton Mail, Proton Drive, or now, Lumo.

Customizable Writing Styles for Smarter Conversations

Yet another highlight in Lumo 1.2 is support for custom writing styles. Users can now tailor Lumo's tone and writing style in relation to their needs in writing from serious business writing to informal, conversational styles.

This personalization feature makes Lumo not just an assistant, but a genuine AI writing companion for both everyday and professional tasks. Whether you’re drafting emails, generating creative ideas, or working on complex research summaries, Lumo adapts its writing approach for the best results.

Continued Proton Drive Integration for Smarter Context

As with the previous iteration, Proton Lumo still includes Proton Drive integration, allowing users to attach or detach documents and PDFs within chats. This enables Lumo to take advantage of more precise context, ensuring more accurate, dependable results are delivered while maintaining full user control over shared files.

This integration extends the reasoning and knowledge enhancements first released in Lumo version 1.1, further sharpening the way Lumo comprehends and responds to user requests becoming increasingly smarter, faster, and more intuitive with each use.

Complete Privacy: Zero-Access Encryption

Remaining committed to Proton's fundamental mission of privacy, all personalization and chat functionality is safeguarded with zero-access encryption. What this implies is that Proton cannot see or read any of your chat information, and none of your logs are stored or utilized for AI training.

Unlike other mass-market AI assistants, Lumo guarantees that your data is always yours completely private and end-to-end encrypted. This continues to distinguish Proton from other AI service providers who tend to prioritize personalization over privacy.

Introducing Lumo Plus: A Premium Experience

While all the new features of Lumo 1.2 are free for all users, Proton has also unveiled a new Lumo Plus subscription plan. Available as a standalone option or an add-on, Lumo Plus unlocks:

• Faster response speeds

• Expanded working memory

• Unlimited chat usage

That is, users no longer need to depend on Proton's current Unlimited, Family, or Duo plans for using the improved AI features they can just subscribe to Lumo Plus on its own for an optimized, premium experience.

With the 1.2 update, Proton again shows that privacy and innovation can go hand-in-hand. Lumo's progression shows Proton's continued efforts to provide ethical AI tools — ones that can value transparency, user control, and security without sacrificing performance.

As AI assistants become a natural part of everyday workflows, Proton's approach to privacy makes Lumo 1.2 a strong choice for users who care about both efficiency and data safety.