Sketch it. Save it. Done.

A quick flowchart, a rough sequence of steps, a one-off timeline — Roughout gets you from idea to diagram in seconds. No account, no cost, nothing saved on our end. Just your own plain-text file, ready to reopen and tweak whenever you need it again.

Try it now — free Mac App — coming soon, $4.99

No sign-up. Nothing to install to try it.

This is the actual tool, not a screenshot — try editing the text on the left.

No account, no cost

Open it and start typing. The web version is free, with nothing to sign up for and nothing to install.

Your file, your rules

Every diagram is a plain text file you save yourself. Reopen it next month, edit it in any text editor, or delete it and leave nothing behind — your call, not ours.

Grows with you

Start with a two-minute doodle. Need more structure — flowcharts, sequence diagrams, Gantt charts — it's already there, opt-in, never in your way until you ask for it.

What you can draw

Freeform & flowcharts

Type A->B->C and get boxes and arrows instantly, or place things by hand. Connectors stay attached as you move shapes around.

Sequence diagrams

Message-by-message, participant order figured out for you — A->B: message and it's drawn correctly, every time.

Gantt charts

A task list with dates becomes a timeline. Spreadsheet-simple on purpose — no dependency arrows or critical-path math to fight with.

More on the way

Mind maps and ER diagrams are next. The plain-text format is the same across every diagram type, so nothing you learn today gets thrown away.