Open Citadel

Thamsanqa Dreem

About this app

Open Citadel

Knowledge changes nothing until you use it.

Open Citadel is your self-development companion, built for people who believe books, podcasts, and ideas should shape the way they think and act.

Read EPUB books, highlight what matters, write your own thoughts, and revisit your ideas in one place. Samwell, your on-device AI companion, understands your library and helps you explore passages, connect ideas across books, and reflect on what you're learning, all while keeping your data on your device.

Features

• Read EPUB books in a clean, distraction-free reader.
• Highlight passages and organise your ideas.
• Chat with Samwell about your books and highlights.
• Connect ideas across your entire library.
• Revisit your thinking through a unified timeline.
• Enjoy text-to-speech and multiple reading themes.
• Keep your knowledge private with on-device AI.

Open Citadel isn't just a place to collect knowledge. It's a place to become.

What’s new

First release of Open Citadel.

- Sync and read your EPUB library with dark/light mode, highlights, bookmarks, and text-to-speech
- Capture every highlight and thought in one timeline
- Chat with Samwell, your on-device AI reading companion, right from any highlight
- Turn highlights and thoughts into shareable images

Thanks for reading with us.