Kajet
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iPhone · iPad · Mac

Your notebook for everyday notes

Capture a thought before it slips away. Open Kajet, start typing, and let automatic saving take care of the rest — no filenames to choose, no save button to remember.

  • One-time purchase
  • No accounts
  • No ads or tracking
Download on the App StoreDownload on the App StoreDownload on the Mac App StoreDownload on the Mac App Store

For iPhone, iPad and Mac.

Version 2.0

The largest update since the first release

Kajet still opens on an empty page and still asks you nothing. What 2.0 adds is what happens after you have written something: a way to read it, a way to file it, and a way to get it out again.

  • Reading mode

    The eye in the toolbar — or ⌥⌘V — shows the page the Markdown describes: headings at their real size, lists, tasks, tables, links and coloured code, without a marker in sight. It opens where you were reading, and pressing it again puts you back exactly where you were typing.

  • Mermaid diagrams

    A mermaid fence is drawn as a picture: flowcharts, state, class and sequence diagrams and pie charts, in the colours of the scheme you are using — or in the diagram’s own, when it gives them. Drawn by Kajet itself, with no web view and no JavaScript.

  • LaTeX mathematics

    Write a formula between dollar signs in a sentence, or put one on its own lines as a block, and reading mode sets it as mathematics: fractions, radicals, sums and integrals with their limits, matrices, aligned equations and brackets that grow to fit. Typeset by Kajet, so it works offline and prints with the page.

  • Code in colour

    Name a language after the opening fence and its keywords, types, strings, numbers and comments are coloured — while you write and while you read. Sixteen languages, in the colours of the scheme you picked. A fence Kajet does not know is left exactly as it was.

  • An archive and a trash

    Deleting a page no longer means losing it. Move to Trash asks nothing, because you can put it back; Archive keeps a page you have finished with. Each opens as a screen of its own with its own search, and the trash clears itself after 30 days.

  • Locked pages

    Any page can go behind Touch ID, Face ID or your device password. Until you open it the list shows only its name, and search, reading mode, statistics, sharing, export and printing all wait. Locking hides a page inside Kajet; it does not encrypt the file.

  • Export as PDF, and printing what you read

    A page becomes a document on white paper, laid out exactly as reading mode shows it — diagrams, mathematics and pictures included — with its text still searchable and selectable. On the Mac ⌘P now prints that same document instead of the markers you typed.

  • Statistics and a table of contents

    Ten tiles — characters, words, lines, sentences, paragraphs, words per sentence, how long the page takes to read silently and aloud, and when it was written — beside a list of every heading, and one tap takes you to it.

  • Nine colour schemes, for the whole window

    Monochrome, Catppuccin, Tokyo Night, Rosé Pine, Everforest and Coral tint the window along with the page. Xcode, Atom One and GitHub leave the window alone and colour only the writing. Light and dark are still picked separately; Catppuccin is the new default.

Also new

  • A page width setting — narrow, standard, wide or full width — so a wide window becomes margin instead of a very long line.
  • Copy Contents puts the whole page on the clipboard, markers and all.
  • Markdown is on from the first launch; if you have ever switched it yourself, your choice is kept.
  • A real macOS 26 window: a system sidebar in floating glass, and the page running to the top edge.
  • On iPhone and iPad the page fills the screen, with the buttons floating on it in Liquid Glass.

Version 2.0 is a free update for everyone who already owns Kajet.

A calm place to write

The same notebook on iPhone, iPad and Mac, with separate colour schemes for the light and the dark appearance. The shots follow the appearance you pick in the header.

On the Mac a window you can keep beside your work — a system sidebar, the page running to the top edge, and its own actions floating on it.

Kajet on Mac with the page list hidden, so the page fills the whole window and the text keeps a comfortable reading column.Kajet on Mac with the page list hidden, so the page fills the whole window and the text keeps a comfortable reading column.
Hide the list when only the page matters
The same page on Mac in reading mode: headings at their real size, a bulleted list, a quotation and a table, with no Markdown markers left in the text.The same page on Mac in reading mode: headings at their real size, a bulleted list, a quotation and a table, with no Markdown markers left in the text.
Press the eye and the markers step aside
A TypeScript code fence on Mac, its keywords, types, strings and numbers coloured in the editor while the page is being written.A TypeScript code fence on Mac, its keywords, types, strings and numbers coloured in the editor while the page is being written.
Fenced code, coloured as you type
A Mermaid flowchart and a sequence diagram drawn as pictures on a Mac page, in the colours of the page’s own scheme.A Mermaid flowchart and a sequence diagram drawn as pictures on a Mac page, in the colours of the page’s own scheme.
Mermaid diagrams, drawn by Kajet itself
LaTeX mathematics typeset on a Mac page: a fitted line, a summation with its limits and a matrix expression, set between paragraphs of ordinary text.LaTeX mathematics typeset on a Mac page: a fitted line, a summation with its limits and a matrix expression, set between paragraphs of ordinary text.
Mathematics, typeset in the page
The archive on Mac, opened as its own screen: archived pages as tiles with their own search field above them.The archive on Mac, opened as its own screen: archived pages as tiles with their own search field above them.
The archive, on a screen of its own

What Kajet does

Pages, not documents

A frictionless list of pages with automatic saving. Give a page a name of your own, or let the first line become its title.

Markdown, from the first launch

Headings, bold, lists and code look the part as you type. Turn the switch off and Kajet is a plain-text editor — either way a page is just text, and the markup is never hidden from you.

Reading mode

One press shows the page as the Markdown describes it, read-only and still selectable, and one press puts you back on the word you left. It opens where you were reading rather than at the top.

Diagrams and mathematics

Mermaid diagrams are drawn and LaTeX formulas are typeset by Kajet itself — no web view, no JavaScript, nothing fetched. They follow your colour scheme, work offline and print with the page.

Code in colour

A fenced block that names its language is syntax-coloured in the editor and in reading mode alike, in sixteen languages, in the colours of the scheme you picked.

An archive and a trash

Archive a page you have finished with, or move an unwanted one to the trash. Both are screens of their own with their own search; restore always puts the page back in the notebook.

Locked pages

Put a page behind Touch ID, Face ID or your device password, and choose how long an opened page stays open. Its words stay out of search until you unlock it.

Order that fits your work

Pin the pages that matter and drag them into the order you like. On iPhone and iPad you can also sort by date or title and file several pages at once.

Find in page

One key highlights every match as you type and counts them, and stepping through them wraps around. The search ignores case and accents, so “zamkniete” still finds “zamknięte”.

Statistics and a table of contents

Ten tiles — characters, words, lines, sentences, paragraphs, words per sentence, reading and speaking time, and the page’s dates — beside a list of every heading you can jump from.

A page that fits the window

Nine colour schemes picked separately for light and dark, an editor font and size of your choosing, and a page width — narrow, standard, wide or full — so a wide window becomes margin instead of a very long line.

Instant capture on Mac

Open Kajet from the menu bar or summon it from any app with a global shortcut you choose. Keep it above other windows when you need a scratchpad.

Copy, share, export and print

Copy the whole page, send it to any app as a Markdown or plain-text file, export it to disk on Mac, and save it as a PDF of the finished page — which is also what ⌘P prints.

Optional iCloud sync

Keep pages in sync across iPhone, iPad and Mac through your own private iCloud storage — or switch sync off and stay entirely local.

Deliberately less

Kajet grew in 2.0, but it did not grow busier. Everything it leaves out is still one thing fewer between you and the page.

  • Nothing competes for attention

    No feed, no ads, no badges, no streaks, no notifications asking you to come back. You open Kajet when you have something to write, and close it when you are done.

  • New things wait to be asked

    Reading mode, diagrams, mathematics and the shelves stay out of the way until you use them: no filenames, no save button, no folders to maintain. An empty notebook looks exactly as it did before.

  • Small, so it is fast

    Written in Swift with SwiftUI and TextKit 2, with no web layer and no third-party dependencies — the diagrams and the mathematics included. Formatting only ever redraws the text that changed, so a long page stays as quick as an empty one.

Keyboard shortcuts

Everything a page can do has a key. With a hardware keyboard you can write, read, search, rearrange and file a whole notebook without reaching for the pointer.

Pages

⌘N
New page
⌥⌘R
Rename the page
⌥⌘P
Pin or unpin the page
⌥⌘L
Lock the page, or remove the lock
⌃⌘A
Archive the page
⌥⌘⌫
Move the page to the trash

Moving around

⌥⌘↑
Previous page
⌥⌘↓
Next page
⌃⌘↑
Move the page up
⌃⌘↓
Move the page down
⌃⌘S
Show or hide the page listMac
⌘0
Bring the window backMac

Reading and finding

⌥⌘V
Reading mode on or off
⌘F
Find in the page
⌘G
Next match
⇧⌘G
Previous match
⌥⌘F
Search every page

Files and settings

⌥⌘E
Export the page to a fileMac
⌘P
Print the finished pageMac
⌘,
SettingsMac
⌥⌘K
Summon Kajet from any appMac · optional
  • ⌥⌘ moves you between pages, ⌃⌘ moves the page. ⌃⌘A archives it, the way it does in Mail. The pairing is deliberate, so the map is learnable instead of a list to memorise.
  • No page shortcut takes a key the text system already uses: ⌘S, ⌘W, ⌘M and every Command-arrow keep their usual meaning while the caret is in your text. ⌘F, ⌘G, ⌘P and ⌘0 keep theirs by genuinely finding, printing and reopening the window.
  • Copy Contents, Share and Export as PDF carry no key on purpose: ⌘C has to go on copying whatever you selected in the editor.
  • The same shortcuts work on iPad with a hardware keyboard — hold ⌘ to see them. On the Mac, the ⓘ button in the toolbar shows the list at any time.

Platforms and requirements

iPhone and iPad

iOS and iPadOS 26.0 or later

Mac

macOS 26.0 or later

One purchase

Buy once for iPhone, iPad and Mac; updates included, no subscription

Version 2.0

A free update for everyone who already owns Kajet

13 languages

The app interface is localized into 13 languages

No accounts

No sign-in, no ads and no tracking

Questions people ask

Most of them are about what Kajet does not do. Those are the answers worth reading first.

Who is Kajet for?

For people who write in short bursts all day: a thought in the middle of a meeting, a command worth keeping, the draft of a message, a list before the shops. If you want a notebook that opens instantly and never asks you anything, Kajet is for you. If you are looking for a research database with backlinks, nested notebooks and plugins, it honestly is not — and that is fine.

What is new in version 2.0?

Reading mode, Mermaid diagrams, LaTeX mathematics, syntax-coloured code fences, an archive and a trash, locked pages, PDF export, nine colour schemes and a page width setting. It is a free update for everyone who already owns Kajet, and the notebook you had is the notebook you keep — nothing needs converting and nothing is filed away for you.

Why is Kajet a paid app?

Because somebody pays for every app, and it should be you rather than an advertiser or a data broker. You buy Kajet once, updates are included, and there are no subscriptions and no in-app purchases. That is also why there is no advertising, no analytics and no tracking: the app has no business model that would need them.

Does one purchase cover all my devices?

Yes. Kajet is a single app for iPhone, iPad and Mac, so one purchase in your Apple Account covers all three. Optional iCloud sync then keeps the same pages on each of them.

Do diagrams and formulas need a connection?

No. Mermaid diagrams are drawn and LaTeX formulas are typeset by Kajet itself, with no web view and no JavaScript, so both work with the network off, follow your colour scheme and text size, and print with the page. The only thing reading mode fetches is an image you linked to yourself, over https; anything that will not load shows its alt text instead.

Why is it so simple?

Every feature costs something: a button, a setting, a moment of hesitation before you type. Kajet leaves out what a notebook does not need, so what remains is immediate. Version 2.0 added a great deal, and none of it is in your way until you ask for it — a notebook you have never archived from looks exactly as it did before.

Why are there no folders, tags or notebooks?

A flat list of pages is faster than any hierarchy you would have to maintain. Pin what matters, drag pages into the order you like, archive what you have finished with, and search titles and contents when the list grows long. Organising a notebook is not writing.

Do I have to write in Markdown?

No. Markdown formatting is a switch, on from the first launch because reading mode, diagrams, mathematics and coloured code all depend on it. Turn it off and Kajet is a plain-text editor. Either way a page is just text — the markup is never hidden from you and never converted into something else.

Is what I write private?

Yes. Kajet has no accounts and no sign-in, collects no data, and contains no analytics, advertising or third-party code. Pages live on your device and, only if you turn sync on, in your own private iCloud storage that nobody else — the developer included — can read.

Can I get my text out again?

Always. Copy a page, share or export it as a Markdown or plain-text file to any app, or save it as a PDF of the finished page — and print it on the Mac. What you write is text on your own device, not a proprietary format inside a service you have to keep paying for.

Will Kajet get more features?

It will keep getting better at what it already does: speed, reliability and the small details of writing. Requests are welcome and read carefully — but “no” is a normal answer here, because keeping the app small is a feature that has to be defended.

Practical questions about sync, storage and exporting are answered on the support page. Go to support →

Your pages stay yours

Kajet collects no personal data. Pages live on your device and, only if you turn sync on, in your own private iCloud storage.

Read the privacy policy →