•FATHOMLY•
For people who take ideas seriously.

Watch it.
Actually keep it.

An island under construction
You've watched hundreds of hours this year.
You remember almost none of it.
What is Fathomly?

Paste any YouTube video.
Fathomly turns it into a quiz that proves you actually understood it.

Not a retell. Not summaries. Real comprehension — the kind of questions a thoughtful friend would ask you afterwards. Every quiz is hand-tuned by AI to the exact ideas you would otherwise forget.

A note from the founder

"Built by someone who got tired of watching YouTube videos and retaining almost nothing from them. I wanted a tool that made me actually think about what I'd just watched – so I built it."

— Jake
Frequently asked
On the surface, sure. The difference is what it asks. Generic quiz tools test recall of facts you just heard. Fathomly asks the questions that force you to actually think — the ones that reveal whether an idea genuinely landed or just passed through.
You paste a YouTube link. Fathomly reads the video and builds a short, thoughtful quiz that tests whether you understood the ideas, not whether you memorised trivia.
Soon. The core is built; we're polishing before opening the doors. Waitlist members get in first.
Any YouTube video with spoken content. Lectures, interviews, essays, podcasts, documentaries all work. Music videos and silent clips won't produce meaningful quizzes.
Eventually yes, to track your progress and levels. For the waitlist, just your email.