The way to learn
something properly.
On the schedule you actually have. About what you actually want to understand.
Learn the things you actually want — structured, voiced, and built to be put to use.
A path, from the first day to a thing you can use.
Pick a path
Choose from the curated catalogue, or generate one on any topic you actually want to learn.
Listen anywhere
On the train, on a walk, between things. Lessons of ten to twenty minutes that fit your real day.
Put it to use
Each path is structured to add up to genuine understanding — knowledge you carry into your work and your life.
Curated, not algorithmic.
A growing shelf of paths on the topics that reward real attention — philosophy, the history of ideas, negotiation, focus, the science of how your mind works. Each one written and voiced to be learned properly, not skimmed.
- Built by people, reviewed before it ships. No scraped summaries, no quote-of-the-day.
- Written for listening. Composed for the ear — not a podcast clip or an audiobook chapter.
- Sorted by depth. From a clean introduction to genuine mastery, at the pace you choose.
Popular this week
See allOr build a path on anything.
Tell Catalyst what you want to understand — for your work, a decision you're facing, something you've always meant to learn. It writes the path, sequences the days, and voices it aloud, the same standard as the curated ones.
- Set the length and the pace. Five days or fourteen. Ten minutes or thirty-five.
- Yours to keep. Sits in your library beside the curated paths.
Don't take our word for it. Take a lesson.
The Stoics drew one line through everything: what's up to you, and what isn't. Your judgment, your effort, your response — yours. The outcome, other people, the weather, the past — not yours. Most suffering, they argued, comes from gripping the second column as if it were the first. The discipline isn't indifference; it's precision. Pour everything into the part you govern, and let the rest arrive as it will. Do that, and you're never quite at the mercy of luck — because the one thing you control turns out to be the one thing worth measuring yourself by.
Stoicism, the foundations
The opening of the first lesson, out loud — and the whole lesson free to read. No account, no card.
Worth reading before you download.
On finishing the books on your shelf
Why we buy more than we read — and the quiet shift that turns intention into understanding.
ReadWhy streaks mislead
What the engagement literature actually shows, what a broken streak teaches a brain, and why closure is the better unit.
ReadWhat Stoicism actually is
A Hellenistic school founded around 300 BCE — not a self-help genre. The school the Stoics actually built.
ReadMost apps are designed to capture your attention. We wanted to build one that deserves it.
We make
- Structured paths that build toward real understanding.
- Audio written to be listened to — once, and remembered.
- Closure when you finish, so progress feels like progress.
We don't
- Run ads, or sell your data. Ever.
- Use streaks, points or leaderboards to keep you hooked.
- Send notifications you didn't ask for.
Start free. Pay only when it's worth it.
The curated catalogue is one flat price. Generating your own paths is metered, so you only pay for what you make.
- ~5 rotating introduction paths
- Finish anything you start
- Full audio, no account hoops
- The full curated catalogue
- All audio, offline downloads
- New paths as they ship
- Everything in Catalogue
- A monthly allowance of generation credits
- Generate a path on any topic
- Everything in Learner
- A larger monthly credit allowance
- Priority on new voices & features
1 credit = 1 minute of generated audio. Top up with credit packs anytime. Cancel whenever — no questions, no dark patterns.