Diagramic is a native Mac canvas for architecture diagrams, database tables, sequence diagrams and flowcharts. Draw by hand, or ask the assistant and then move anything yourself.
Coming soon to the Mac App Store
Every shape is a real object with a meaning, not a picture. Tables have rows, lifelines hold their messages, arrows stay attached.

Keys, columns and one-to-many links that follow when you move a table.

Messages snap to lifelines. Add a step and nothing drifts.

A paper canvas by day and a slate board after dark.

Fields, methods and inheritance arrows in a few clicks.

Shapes for flows, systems and data, plus 19 clean icons.
No. You can draw, save and export boards without signing in. Signing in with Apple is only needed for the assistant, for purchases and for keeping your boards in step across your Macs.
You describe a diagram in plain words and it draws it on the board with the same shapes you use by hand. Ask for a change and it edits the board in place instead of starting over. One Undo takes back a whole reply.
Each assistant reply uses coins, depending on how much work the AI model did. New accounts receive some coins to try it. Drawing by hand never uses coins.
Yes, if you turn it on. Diagramic has a local connection (MCP) on your Mac, so an AI tool you already use can read and edit your boards. It is off by default.
PNG, SVG and the board file itself (JSON), which you can import again or keep in version control.
Not yet. Diagramic is a Mac app for now.