Fast and efficient
Fast and efficient. Pleasant to use!
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About
This app acts as a browser that remembers what you read, building a personal knowledge base from engaged pages. It allows you to ask questions in plain English about your reading history, with answers generated by an on-device AI. All your data remains private and offline.
✓On-device AI knowledge base
✓Plain English questioning
✓Automatic content organization
✓Private and offline browsing
✓Tracker blocking
✓Source citation for answers
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What's New in Lumen
1.4.1
June 19, 2026
- Answers about your saved pages come up faster - AI replies now stay steady on screen as it's being written - Search results pages won't get saved anymore, so your folders stay tidy - Fixed going back through your Topics, Websites, and Pages - Fixed the dates and grouping on your reading history - Made the app start up more reliably and run a bit smoother
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FAQ
Does Lumen have ads?
No, Lumen is completely ad-free. The app is built with a focus on privacy and user experience, ensuring no advertisements disrupt your browsing or knowledge recall.
What are the system requirements for Lumen?
Lumen requires iOS 18 or later. An iPhone with Apple Silicon is recommended for optimal on-device AI performance. The AI model weights download once on first launch, approximately 700 MB.
How does Lumen ensure user privacy?
Lumen prioritizes privacy by running its AI model entirely on your device, with no data leaving your phone. It also includes built-in privacy features like tracker blocking, third-party cookie blocking, and fingerprint resistance.
Can I use Lumen offline?
Yes, Lumen works fully offline after the initial AI model download. This includes browsing, reading, asking questions, and receiving answers, making it a reliable tool even without an internet connection.
How does Lumen organize my reading?
Lumen automatically organizes your reading into a hierarchy of Topics, Websites, and Pages. Each level features an AI-generated summary, allowing you to quickly scan and understand what you've been learning without manual tagging or folder management.
What is the age rating for Lumen?
Lumen has an age rating of 17+. This is likely due to the advanced AI capabilities and the nature of content that users might engage with and store.
How often is Lumen updated?
Lumen was last updated on June 19, 2026, with version 1.4.1. This indicates a relatively frequent update schedule, suggesting ongoing development and improvements.
What devices does Lumen support?
Lumen is designed for iOS devices and currently supports iPhones. It is built using Apple's native frameworks for a seamless experience on the platform.