For people who read to remember
Stop forgetting what you read.
Every chapter becomes a 12-minute read, a quick quiz, and a review that comes back right before you would forget.
No card · 2 free books · 135 titles
Every book is a building. Step inside.
01 · Summary
The whole book, down to the lines that matter.
Atomic Habits, chapter one, in about 12 minutes. The walls go quiet, and what stays lit is the idea.
02 · Examples · Atomic Habits
Watch each idea play out somewhere real.
A glass of water by the bed: the cue that makes the habit obvious.
Running shoes by the front door: the environment doing the deciding for you.
A coat on the hook by the door: the two-minute version of the thing you keep postponing.
A door. No handle.
03 · Quiz
Recall is the key.
A short quiz after every chapter, answered from memory before you look back. That small effort is the testing effect, and it is what locks the idea in.
Locked.
One book. Kept.
04 · Spaced review
It finds you again, right before you would forget.
FSRS-5 predicts the moment an idea is about to go dark and brings it back right then. Never more review than you need.
Left alone, even a kept book fades.
Day 1 · one room lit
Day 4 · four rooms lit
Day 12 · twelve rooms lit
Day 36 · the tower stays lit
Finish the book.
Keep the ideas.
Requests
Don’t see your book?
Tell us the title and we’ll email you if it joins the library. Every request lands with us directly, and shapes what we build next.
Before you start
Questions, answered.
Yes — cancel anytime from your settings, no penalties, no lock-in. Cancel during the 14-day trial and you're never charged. Cancel after and Pro runs until the end of the period you've paid for.
Nothing disappears — you keep your finished books and their summaries, examples, and reviews. To start new books, you upgrade to Pro.
Always. We add titles regularly, and you can request the ones you want — Pro requests get priority.
ChapterFlow runs in any browser, on any device — nothing to install. A native app is on the roadmap.
It's yours. Export everything — progress, notes, the lot — as JSON, CSV, or Markdown anytime, and delete your account whenever you want. Deleting also cancels any active subscription.
Pricing
Start free. Upgrade when it sticks.
Two plans, no lock-in. Read 2 free books, no card. Upgrade when you feel it working. Cancel anytime.
Save 25% billed annually
Free
Try the full loop on two complete books. No card, no expiry.
- The full book library to browse
- Finish 2 complete books
- Summaries, examples, and quizzes
- Lite and Standard depth modes
- Spaced-repetition review
Pro
Recommended
The whole library and the deepest reading mode, with priority on new titles.
- Everything in Free, unlimited
- Every book, no finish limit
- Deeper depth mode
- Text-to-speech audio
- Reading analytics and note export
- Priority on new title requests
Cancel anytime.
Card required, charged when the 14-day trial ends.
Read it once. Keep it for good.
Start with 2 free books, no card. From here on, what you read stays with you.