Master Any Subject.
One Concept at a Time.
Traditional Studying Doesn't Work
You're juggling classes, exams, and life—while traditional study methods fail you.
Information Overload
Every course dumps hundreds of pages on you weekly. Textbooks, lectures, readings—you're drowning in content.
No Time to Study Right
Between classes, assignments, and exams, you resort to cramming the night before. It doesn't stick.
Expensive & Fragmented Tools
Quizlet for flashcards, Notion for notes, YouTube for videos—you're paying $30-50/month for scattered tools.
One App for Your Entire Learning Journey
From first day to final exam. Record lectures, get instant study materials, and truly understand using the Feynman Technique.
"If you can't explain it to a 5-year-old, you don't really understand it."
— Richard Feynman, Nobel Laureate
Traditional Study Tools
BrainDen
From Lecture to Exam Day in 3 Steps
Capture Your Content
Record lectures, upload textbook chapters, images, or capture notes. Add YouTube videos and more—AI extracts key concepts automatically.
AI Builds Your Study Materials
Get instant flashcards, practice quizzes, and organized notes for any subject—automatically generated from your content.
Test Your Understanding
Feynman Mode challenges you to explain concepts back. If you can teach it to our AI, you truly understand it—no more surface-level cramming.
Everything You Need to Learn Effectively
Swipe to explore our powerful features
Questions? We've Got Answers
Built by Someone Who Gets It
I watched friends struggle through school—drowning in textbooks, wasting money on scattered study tools that barely helped.
They'd record lectures but never review them. Buy Quizlet Plus but make cards manually. Pay for expensive apps but forget everything after the exam.
When I discovered the Feynman Technique, it clicked: if you can explain a concept simply, you truly understand it. But students don't have time to find study partners.
That's why I built BrainDen. One app that captures your lectures, generates your flashcards, and becomes your AI study partner for your entire learning journey.
From first day to final exam. Free to start, upgrade anytime.