A long list, arranged so it never feels like one
Cadema has a lot of capability. It stays learnable because every capability belongs to one of four systems — and once you understand the system, you already understand the tool.
The ink engine
One stroke pipeline drives every writing and drawing tool, so pressure, tilt and speed behave the same everywhere.
Pen, pencil, brush, marker
Distinct nib profiles built from the same physics, not separate tools with separate quirks.
Pressure and tilt
Full stylus support on Android and desktop, including graphics tablets over USB or Bluetooth.
Predictive smoothing
The line stays under the nib instead of trailing behind your hand.
Shading and blending
Opacity, soft edges and layered strokes for shaded diagrams and artwork.
Highlighter
Draws behind your writing so text stays legible.
Precision eraser
Erase by stroke, by area, or by pixel — undo history is never lost.
Palm rejection
Rest your hand on the glass while writing with a stylus.
Rulers and guides
Straight edges, protractor and snapping for technical work.
The object model
Everything on a page is an object you can select, move, scale, group, layer and restyle with the same gestures.
Lasso and select
Grab ink, text and images together and move them as one.
Shapes
Draw roughly, get a clean shape — or keep the rough line if you prefer it.
Tables
Insert, resize, merge cells, and handwrite inside them.
Equations
Type LaTeX or write by hand; both become editable objects.
Text boxes
Typed text with full styling, sitting alongside handwriting.
Images and photos
Drop in a photo of the whiteboard and annotate over it.
Layers
Separate a diagram from the notes on top of it.
Copy across notebooks
Objects keep their styling when they move between pages.
The on-device index
Handwriting recognition, typed text and PDF text all feed one search index that never leaves your device.
Handwriting search
Find words you wrote by hand, without converting them to text.
PDF text search
Imported lecture slides and past papers are searchable too.
Tags and starring
Lightweight organisation that survives reorganising notebooks.
Jump to page
Results open at the exact page and scroll position.
Offline recognition
Recognition runs locally; nothing is uploaded for processing.
Multi-script support
Latin, Greek maths notation and CJK character grids.
The notebook library
Notebooks, sections and pages nest like a real shelf, and templates are built from the same page primitives.
Notebooks and sections
Structure per subject, module or project.
Paper templates
Ruled, grid, dotted, staved music, isometric and character grids.
Page management
Insert, duplicate, reorder and archive pages without losing links.
PDF import and annotation
Write directly onto slides, worksheets and past papers.
Export
PDF, PNG, or an open archive format you can read without Cadema.
Local transfer
Move notebooks between your own devices over LAN or Bluetooth.
Audio-linked notes
Record a lecture; tapping a word jumps to that moment.
Revision decks
Turn highlighted passages into practice cards in place.