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How it works

Fast because of what it refuses to do

Cadema is built around a single constraint: writing must never wait for anything. That one rule decides the storage model, the interface and the privacy posture.

  1. Open and write

    There is no loading screen and no sign-in. The app restores the page you were last on, with the toolbar where you left it.

  2. Everything saves as you go

    Strokes are written to local storage continuously. Closing the lid, losing battery or killing the app does not lose a line.

  3. Recognition happens on your device

    Handwriting is indexed locally in the background so search works instantly — with no upload and no connection.

  4. You decide what leaves

    Export a page as PDF or image, or move a whole notebook to another of your devices over your own network. Nothing moves on its own.

Interface anatomy

A plain page, and tools that come when called

At rest you see paper and a small rail. Depth appears on demand: tap a tool twice for its full settings, and it folds away again the moment you start writing.

State 1

At rest

Page, a seven-icon rail, and your last colour. Nothing else competes for attention.

State 2

On demand

A second tap expands nib size, opacity, blending and palette in place — no modal, no settings trip.

State 3

Out of the way

Start a stroke and every panel collapses, leaving the full page under your hand.

Design principles

Six rules we hold ourselves to

Instant over impressive

If a feature adds a spinner to opening a page, it does not ship.

Plain over clever

A quiet interface with deep tools beats a busy one with shallow ones.

Reach over reach-around

Controls sit where your hand already is, on whichever edge you choose.

Local over remote

The network is an optional convenience, never a dependency.

Open over locked

Your pages export to formats that outlive the app.

Quiet over noisy

No badges, streaks or nudges. It is a notebook, not a game.