A notebook that quizzes you back.

Jot down what you learn. Jakin links it, keeps it in files that are yours, and asks you about it later.

Open Jakin Free. In your browser. Also on your Mac and phone.

Yours, for keeps.

Everything you write is a plain file in a place you own. Open it anywhere, take it anywhere, keep it forever.

Plain files, no lock-in
Works with the notes app you already use
Nothing is stuck inside Jakin

Hubble.md

The [[Hubble]] telescope was launched in 1990 and is still taking pictures.

Jakin in the browser: a fact half-typed, the one just saved beneath it, a quick question about an older fact, and related facts below — Used every day by at least one person. Its author.

It links as you type.

Mention a person, a place or a thing and it becomes a page. Everything you've said about it, in one spot.

People, places and things, offered as you write
Old facts show up next to the new one
Type @ to name someone

Jakin on a phone: a fact half-typed and, beneath it, the facts already known about Hubble

It asks you back.

A quick question right after you save. A short review on the days things come due. That's how it sticks.

One question, right after you save
A review that fits in a coffee break
Works on your phone in bed

Stop losing what you learn.

Jakin is fast, free and plain files. Open it in your browser, sign in with GitHub, and write the first one.

Open Jakin