BrainDen: Lecture Note Taker

Ovionos Ventures Ltd

In-app purchases

About this app

Turn lectures and study materials into a complete study system.

BrainDen transforms lectures, PDFs, photos, audio files, text, and video links into structured notes you can edit, connect, annotate, and review.

CAPTURE WITHOUT FALLING BEHIND
• Record live lectures while BrainDen organizes the material
• Upload audio files and PDFs
• Capture textbooks, handwritten notes, or whiteboards
• Import text and supported video links
• Combine multiple sources inside one note

LEARN WITH ACTIVE RECALL
• Generate flashcards from your own material
• Review cards with spaced repetition
• Create quizzes that reveal weak areas
• Build mind maps to see how ideas connect

UNDERSTAND WITH FEYNMAN MODE
Choose a topic and explain it in your own words. BrainDen gives focused feedback, identifies gaps, and helps you turn memorized facts into real understanding.

MAKE EVERY NOTE YOURS
• Edit titles and note content
• Refine selected sections with AI
• Highlight important passages and add inline comments
• Link related notes and source materials
• Organize nested folders and read selected notes together
• Export notes and folders as PDF, Markdown, text, or ZIP

ASK YOUR MATERIAL
Chat with your notes when you need a simpler explanation, an example, or a step-by-step breakdown grounded in your study material.

STUDY YOUR WAY
• Generate study materials in multiple languages
• Continue reading recently opened notes offline
• Use light or dark appearance
• Share useful notes and folders

BrainDen is free to try. Some generation limits and advanced features require BrainDen Pro.

Terms of Service: https://www.brainden.app/terms
Privacy Policy: https://www.brainden.app/privacy

What’s new

BrainDen 1.1.1 makes your study materials easier to build, organise and understand.

• Combine multiple sources in one note, including PDFs and recordings
• Edit notes directly and refine selected blocks with AI
• Highlight passages and attach inline comments
• Organise nested folders and move notes between them
• Add source materials to existing notes
• Read selected notes together and export folders as PDF, Markdown or ZIP
• Improved recording reliability, navigation and study actions