Every great lesson starts with a stick of chalk.

Nimbus is the friendly chalkboard workspace for sketching notes, running live lessons, and saving every lightbulb moment.

What's on the board

Draw diagrams exactly the way you would on a classroom board — no grids, no judgement, plenty of doodle room.

Ready-made layouts for lab reports, timelines, and vocabulary walls. Just chalk in the blanks.

Invite up to 30 students to scribble, vote, and learn together in real time — from any device.

Pick a template or start empty — your first sketch takes under a minute.

Share one link. Students join as guests — no accounts, no setup.

Export a print-ready handout, or replay every stroke as a mini-lesson.

Nimbus replaced three tools in my classroom. My students actually argue over who gets to sketch next.

— Maya Chen, High-School Science Teacher

The replay feature is gold. Parents watch each lesson unfold exactly the way I taught it.

— Daniel Okafor, Math Tutor

$0 forever

$9 per teacher / month

$24 per teacher / month

Do students need an account to join a board?

No — anyone with your board link joins as a guest in seconds. Names are optional, and no personal data is stored.

Can I export boards as handouts?

Yes. Every board exports as a print-ready PDF or PNG, with your title, date, and class name written on the chalk tray.

Is Nimbus accessible for keyboard-only users?

Every tool is fully keyboard operable, works with screen readers, and replays include captions for spoken annotations.

Join the early-access list and we'll chalk your name in first.