Konku holds your notes and cards, then works out for itself when each card needs reviewing. The name comes from Konsisten-ku, "my consistency", and that is also the whole idea: small consistency beats occasional intensity.
New accounts are not open yet. There is no waiting list — when signup opens, the button on this page is what changes.
The problem
Memory fades on a schedule of its own, and that schedule does not care how clear something felt the first time you understood it.
What goes missing rarely feels missing — you usually find out when you need the material again.
Keeping track of what to review and when is not a question of discipline, it is bookkeeping. Bookkeeping is work for software.
How it works
Three steps, and the third one is not yours to remember.
Markdown, a title and a body. One domain per note, and as many categories as you need. No wizard and no type to pick up front: a blank page and a cursor.
Cards are their own feature, not something parsed out of a note: you write the front and the back yourself. Cards and notes share the same domain and categories, so the same filters reach both.
Open Review, work through what comes up that day, done. You never pick which cards to review: the scheduler picks, and a schedule cannot forget.
A new card is due tomorrow. Each time you remember it, the gap moves up one rung. Each time you forget, the card goes back to tomorrow — that is all, no other penalty and no history lost. Past the last rung, a card stops being scheduled and is marked as mastered; its history stays.
Deliberate limits
Every spaced repetition app has a feature list. What tells them apart is what is missing from it — and these four are missing because they were decided against, not because nobody got round to them.
Ten cards a day, longest overdue first, the rest moved to tomorrow without any fuss. The screen says only that the rest are tomorrow. Coming back from two weeks away to forty due cards is not a challenge, it is a reason to stop — and however tidily that number is presented, it is still the number that makes people give up.
When a card comes up, the server does not send its back at all. Not hidden with CSS, not a habit of the interface — the API response genuinely carries no answer until you press reveal. Recall you can peek at in dev tools is not recall, and recall is the one thing that makes reviewing worth anything.
No points, no badges, no levels, no run of days that resets because you missed one. A missed day is normal and the app treats it as normal: what is due keeps waiting, nothing is forfeited, nothing tells you off. Mechanics built on guilt make people stop, not keep going.
No sharing, no leaderboards, no friends, no way for anyone to see your notes. Learning history is never pooled across accounts into statistics either: every number is worked out per account, for that account. It is the most useful data this product could gather, and that is not a reason to gather it.
What's inside
One queue, already ordered, ready to work through. You answer from memory first, then reveal the answer, then mark it remembered or forgotten. There is nothing to set up before you start — one click from the home screen to the first card.
A title and a body, written in markdown. One domain per note and as many categories as you need, with filters that can combine several domains and categories at once. Title search runs on the server, so "nothing found" means there is nothing, not that it has not loaded onto the screen yet.
Cards are not taken from notes — you write them directly, front and back. Editing a card's text never resets its schedule, so fixing a typo does not throw away months of review history.
15, 20, 25, 30, or 45 minutes, with 20 as the default — a short session you finish is worth more than a long one you walk away from. A session can be given a domain from the start, or not. When the time is up, one question appears, asking what you learned. One field, and you can skip it.
Save a practice set along with its filters: which domains, which categories, how many questions, a fixed set of cards or a random draw, free recall or multiple choice. A practice set can be left half-done and picked up later. Answers in a practice set never move your review schedule, so no amount of practice breaks anything.
Your data
Konku is free, run by one person, the code is open, and it works in Indonesian and English. If that is how learning goes for you — understand quickly, forget quickly — this is what it was built for.
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