Explainer — AI that draws the idea while you talk

🎬 Present & record

Plays your lesson full-screen with no UI — start your screen recorder, then hit Space.

Your name / handle (optional)

End-card call to action

Pacing

Snappy Normal Relaxed

ExplainerI draw the idea while you talk

2 credits left

A whiteboard that listens

Tap a lesson chip below, or just start explaining — the board builds itself.

What should we explain?

Tap the mic and say a topic — the board draws itself as you talk. Or start with one of these:

Tap the mic and explain a topic, or pick a lesson chip to watch one.

🔍 Click a node to go deeper · double-click to fix its label·AI-drawn — double-check facts before teaching

Key Points

The big takeaways land here, one at a time.

A lesson is {"steps":[{ "say": spoken line, "actions":[…] }]}. Build up ONE idea per step. Action types: title {type,text,sub} addNode {type,id,label,icon,col:0-5,row:0-3,tone} connect {type,from,to,label?,dashed?} packet {type,from,to,tone,count:1-4} reveal {type,text,tone} side key-point spotlight {type,target} dim board, glow one node annotate {type,target,text,side} top|bottom|left|right pulse {type,target,tone} toast {type,text,tone} code {type,lang,title,lines:[…],focus} then {type,append:[…],focus} math {type,tex,note} LaTeX (KaTeX) clear / clearBoard tone: brand | ok | warn | alert | muted Tip: hit ✨ Draft to get a starter, then edit.

Key Points

Teach me from this

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