01
A daily lesson, not a daily feed.
You open the app, listen to today's lesson, mark it done. The app closes when the lesson ends — no scroll, no notifications stack, no recommended-for-you tray.
A daily learning companion · audio-first · iOS
The way to learn something properly.
On the schedule you actually have. About what you actually want to understand.
Ten- to twenty-minute lessons · no signup needed to read · iOS first.
Explore
A path for today.
Search any topic…
By topic
14 topics
Explore
What it does
A book on a topic — read aloud, in seven days.
Three things Catalyst is built to do — and three it isn't.
02
A path with an end.
Curated paths are seven days, hand-written. Custom paths — anything you describe — generate in about ninety seconds. Each closes itself. You finish them. You move on.
03
No streaks. No flame to defend.
You'll see "you've returned three days in a row" written out, in a sentence. That's our entire claim on your attention. No badges, no XP, no leaderboard.
Philosophy · 7 days · 90 min
Stoicism, the foundations.
A week with Epictetus, Seneca, and Marcus — read aloud.
Day 01 · The dichotomy of control
9 min · listened
Day 02 · The view from above
11 min · listened
03
Voluntary discomfort, as inoculation
TODAY · 13 MIN
04
The art of negative visualisation
10 min · tomorrow
05
Memento mori — keeping it close
12 min · locked
Journey
A day, walked through
Open the app, on the way to somewhere.
01
Pick a path you actually care about. Choose a curated path, or type a topic and generate your own — anything from “how the Greeks thought about anger” to “negotiation, for non-negotiators.”
02
Listen, or read. A 10–20 minute lesson narrated by a human voice. Plays in the background, locks the screen, AirPlays to the car. Reads cleanly when you'd rather sit with it.
03
Mark it done. Close the app. Spaced-review surfaces the lesson again two weeks later, in a single sentence. That's the loop.
What's inside
Browse all paths
Fourteen topics. Or yours.
What it costs
Less than two paperbacks a year.
Start on Free. Upgrade when a second path calls your name.
Free
€0
/ forever
A taste of Catalyst. One curated path, narrated Day 1 included.
- 1 active curated path
- Day 1 audio of every path
- Custom paths
- Audio for Days 2–7
- Offline downloads
Welcome — 33% off
Annual
€89.99
€59.99
/ year
About €5 a month. The welcome price is offered once.
- Every curated path
- Audio for every lesson
- Custom paths, unlimited
- Offline downloads
- Spaced review
Monthly
€7.99
/ month
Same product, paid monthly. Cancel any time, keep your library.
- Every curated path
- Audio for every lesson
- Custom paths, unlimited
- Offline downloads
- Spaced review
All plans: cancel any time · keep your library on cancellation · no ads, ever.
A short principle
Most apps are designed to capture attention. We wanted to build one that deserves it — an hour a week, where the only metric that matters is whether you came back.
Read the manifesto →
A few honest questions
Things people actually ask.
How is this different from Blinkist or Headway? +
Book-summary apps give you the takeaway of a book in fifteen minutes. Catalyst gives you a seven-day path that does the opposite — slows an idea down enough that you can actually live with it. The summary is the work, here. You'll never finish a path feeling that you were spared the thinking.
Who writes the lessons? +
Curated paths are written by people who teach the material for a living and reviewed twice before publishing. Custom paths use an AI pipeline (blueprint → script → polish) and are narrated by the same voice cast — they're labelled as generated, so you always know.
Will there be Android? +
iOS first — it's where we can hold the craft bar highest in a small team. Android is on the roadmap, after the iOS public launch.
What's on the free tier? +
One curated path of your choice, with Day 1 narrated and the rest readable. You can finish the path on Free if you'd rather read than listen. Upgrade when you want audio for the remaining days, custom paths, or a second active path.
More from Catalyst
A small reading room.
A few quiet corners of the site — essays, topic clusters, the public 100-paths list, and a way to ask for the next one.
The mailing list
A note when a new path lands.
One short email when something worth reading goes up. No marketing cadence. Unsubscribe in a click.
One email per new path. No marketing email, ever.