Learn anything.
Just by listening.
Custom audio courses built by AI. Any topic. Ready in minutes.
Custom audio courses built by AI. Any topic. Ready in minutes.
That course you took last year. That podcast from three months ago. That article from last week. Gone. Not because you weren't paying attention. Because that's how forgetting works. It's relentless and automatic.
Cognitive scientists solved this problem decades ago. The fix is simple: revisit ideas at specific intervals before they fade. But nobody does it because it's tedious and nobody has time.
So we built something that handles the tedious part. You learn. We make sure it stays.
History, science, AI, business, and more. Each one designed for your ears, with quizzes that make it stick. See what others are learning — or make your own.
Want to master something specific? Generate a course on any topic in minutes. Our scripts are written by the most capable AI available. They're fact-checked, comprehensive, and tailored to how you actually learn.
AI lets us offer an incredible product at a price for just about anyone. We're transparent about how we use it.
AI-generated content comes with a catch: sometimes it's wrong. We don't hide from that. Every claim is automatically verified against reliable sources. We review ourselves, detect mistakes, and call them out.
Answer a question. Get it wrong, get it right — either way, you just started building a memory. We'll bring it back at the perfect moment, right before you'd forget. That's spaced repetition. Try it below.
What cognitive principle explains why spacing out review sessions improves long-term retention?
This is how it feels in the app. Try it.
Available now on iOS and Android.