Write and sketch with Apple Pencil on a paper-like canvas.
Apple Pencil whiteboard
Draw the relationships that a document cannot show.
FlowShow gives Apple Pencil ink a large spatial surface where sketches, arrows, shapes, browser references, files, and images can remain together.
It is built for diagrams, research notes, systems, and plans that need visual connections instead of another stack of pages.
Ink stays connected to the material it explains.
Annotate near a browser pane, draw around an image, or map the relationship between files without flattening the source and the note into separate apps.
Create diagrams that remain easy to revise.
Place explanation where it belongs instead of in a detached note.
Start rough and keep refining.
Use a scratch board for a fast idea, then add references and structure as the problem becomes clearer.
Keep private work local.
The core board stays on the device. Export only when you are ready to share the result.
Related Callie Pro topics
Keep exploring the math.
Explore Callie Pro in depth.
The user guide covers graphing, Temporal Mode, Complex 3D, CAS, Python, Matrix, Stats, Table, Trace, constants, and export workflows.