type · recall · repeat

Type it
to keep it.

The study tool where typing is the recall — and an FSRS-6 memory engine schedules exactly what to review next.
Code, Vim & languages for developers; lecture notes & exam prep for every other student.

Try it — no signup See what's inside
MonkeyType flow · Anki memory for devs · CS students · self-learners FSRS-6 · BYOK AI · free
~/library/comp372/quicksort SPEED
0 wpm
100% acc
0:00 time
idle
Click here, then start typing tab
Quicksort partitions an array around a pivot, then recursively sorts each side. The average case runs in n log n time, but a poor pivot choice can degrade to quadratic. Lomuto and Hoare are the two classic partition schemes; Hoare tends to do fewer swaps in practice. Choose the pivot well — randomize, or median-of-three.
tab↵ restart ↪ on commit, FSRS schedules the next review
correct char wrong — keep going live caret · 60fps lerp
everything in one place

Four tools most people keep in four tabs.
One loop that actually remembers.

MonkeyType-style flow, Anki-grade memory, a Vim dojo and a course catalogue — without the dead ends. Start where you want; everything feeds the same spaced-repetition engine.

Courses

Learn by typing every line

Programming languages and university courses — original tracks where the motor act of typing the material is what encodes it.

Open
Type & race

Touch typing, drills & races

Touch-typing courses, MonkeyType-style practice, weak-key warm-ups built from your own misses, pace races and a global WPM leaderboard.

Open
Review

Memory on autopilot

Type the answer; FSRS-6 spaced repetition decides exactly when you see it again. Cram mode tightens the schedule before an exam.

Open
Vim power

A full Vim dojo

Its own complete trainer — Vim Golf challenges, a live playground and a searchable cheat-sheet. Opt into Vim motions everywhere else, too.

Open
Academic power

University courses as decks

Real course material as public decks you can type through — like Athabasca University COMP 218, 268 & 378 — plus a community library.

Open
Import & AI power

Bring your own material

Drag in a PDF, Markdown or Anki .apkg. Optional bring-your-own-key AI turns raw notes into typing-ready cards — your key, $0 to us.

Open
════════ WATCH THE SCHEDULER ════════

Most study apps hide their algorithm.
We expose it.

Six cards. One rating. Click any score — FSRS-6 re-positions the card on the next-due axis, in real time, with the actual math. No black box, no priority queue you can't see.

$ schedule --next 14d
now 1d 3d 7d 14d
  • ▼
FSRS-6 · retention target 0.90 click a card to select · rate to re-schedule
selected card

quicksort · partition

next review · 3.4d

rate this attempt
────────────────────────────────

Every review you do in the app runs this same loop.
You can read the rules. You can grep the source.

════════ MANIFESTO ════════

Studying isn't reading.
It's doing.

Most study apps treat your brain like a passive disk — highlight a passage, see the same words tomorrow, hope they stuck.

We don't. Every review is a typed answer. Every typed answer is a tiny, measurable retrieval. The keyboard isn't a hurdle; it's the whole point.

Layer on FSRS-6 spaced repetition, Vim-style code drills, and a learning loop that actually feels good — and study stops being something you postpone.

three movements

One loop. No friction.

01

Import anything

PDF · Markdown · .apkg · paste

$memra import notes.pdf
✓ extracted 142 pages
✓ generated 47 cards · q/a · cloze · snippet
↪ ready in ./library/algorithms/

Drag a textbook PDF in. Or paste your lecture notes. Optional BYOK AI converts raw text into typing-ready cards — your key, your account, our prompts.

02

Type through it

Word engine · code engine · vim

fn quicksort(arr) {
if arr.len() <= 1 { return; }
let p = partition(arr);
}

Prose flows word-by-word, MonkeyType-style. Code is char-by-char with syntax highlighting, line numbers, and a working Vim NORMAL mode for the keyboard hard-mode crowd.

03

Remember it

FSRS-6 · cram · daily challenge

┌──── next 24h ────┐
│ due: 12 ▮▮▮▮▮▮▮▮ │
│ new: 4 ▮▮▮▮ │
│ cram: 3d ▮▮▮ ░░░░ │
└──────────────────┘

Every keystroke informs scheduling. Forgotten cards bubble up; mastered ones rest. Exam coming up? Cram mode tightens the interval cap. A daily challenge keeps the streak alive.

60fps caret lerp · zero jank
5ms keystroke → screen
FSRS-6 scientific scheduling
$0 forever-free floor
════════ FAQ ════════

$ man memra

Anki schedules well but feels like 2009 and has no AI. Quizlet is broad-audience and adding paywalls. MonkeyType is pure typing, no study. Memra is the intersection — typing as recall, scheduled by FSRS-6, with Vim and code-native rendering on day one.