How Kleus works
By Yanis, founder of Kleus · Last updated 11 September 2026
Kleus works in four beats. You bring a book, a document, a YouTube video, an Apple Podcasts episode or a topic; it reads the whole thing and builds a chaptered path through it. Each day one lesson arrives on WhatsApp or Telegram, teaching one idea from the source's own passages. It ends in a short check on what you wrote; Kleus scores it out of 100, names what landed and what was missing, and brings the missing part back in a later lesson. Miss a day and the path bends. Go quiet and Kleus checks in on your chat.
1. Bring the thing
A book or document (PDF, EPUB, MOBI, AZW3, Markdown, plain text), a YouTube link, an Apple Podcasts episode up to about three hours, or just a topic. You say what you want to understand and how many minutes a day you are actually willing to spend. Kleus reads the whole source, maps it, and builds the path: chapters, in order, sized to the time you committed.
The session length you pick is the destination, not day one. The first three real lessons ramp up to it from fifteen minutes, because a plan that opens with your hardest commitment is a plan that gets abandoned in week one.
2. Do today's lesson
One lesson lands in your chat. It explains one idea from your material, quoting the source's own passages, and stops to ask what you think happens next before it tells you. Then a few questions you answer in your own words. Every lesson ends in something you wrote. That is the deliberate part: a chapter you only read leaves nothing behind to check.
3. Kleus checks it and writes tomorrow
Each lesson closes with a short check on what you wrote. Kleus scores it out of 100, and for each question quotes your answer back, names what landed and what was missing, and below 50 spells out the answer. The overall form is fixed everywhere: 82/100 - flaky on the proofs. Redo Thursday.
| Band | Score | What happens next |
|---|---|---|
| Solid | above 80 | The plan moves on. Nothing is repeated for the sake of it. |
| Flaky | 50 to 80 | The task counts as done, and the concepts you were weak on are pushed into the rest of the chapter so they come back inside your ordinary work. |
| Lacking | below 50 | A focused redo is scheduled automatically, spaced a real lesson away rather than dumped on you tomorrow. No lecture, no choice to make. |
The bands describe the work, never the person. Lacking work does not earn a lecture; it earns a redo. That distinction is not decoration: feedback that points at the self backfires often enough that it is the single most common way well-meant grading makes people worse.
Kleus decides when the redo lands, not you. Deadlines somebody else sets, spaced evenly, produce better work and fewer late submissions than deadlines people set for themselves (Ariely and Wertenbroch, 2002). People space their own badly.
4. Miss a day, keep the path
Nothing breaks. There is no streak to lose and nothing to restart. The missed day is logged without commentary and the path reshuffles around your life, so the chapter still gets finished. Missing one day barely dents a habit in the research; what breaks people is the shame spiral afterwards, and a plan that resets to zero is a machine for producing one.
What happens when you go quiet
This is the support, not the routine. It is described here in full, once, because a product that contacts you should be exact about when.
- Your lesson arrives at your scheduled time and goes unanswered.
- A nudge follows in the same chat, about an hour later.
- If the silence keeps going, the follow-ups get firmer, at the pressure level you set.
- It stays in your chat. Nothing rings, nothing emails your boss; the pressure is the message.
You set how far that goes, from a gentle nudge to drill sergeant, and you can change it whenever you like. The default is high standards plus the assumption you can meet them, because controlling language mostly produces resistance.
Where it all happens
- WhatsApp or Telegram. The lesson, the check, the nudges. Whichever one you already live in.
- The web app. Your path, your sources, your history, and a mirror inbox that shows every message from every channel in one place.
- Email. Mirrors the daily lesson, so nothing depends on you keeping one app open.
The part nothing else does
A streak counts the days you opened an app. A body-doubling session proves you sat there. A checkbox proves you tapped it. None of them can tell whether you learned anything, and neither can you, until it is too late. Kleus checks what you wrote, and writes tomorrow from the result. That is the whole argument, and the category page puts it next to what everything else in this space actually checks.
Try one real lesson. No account.
About five minutes of reading, then a short check graded on what you write. Do it, then decide.