CodeSprout – HTML Vibecoder for Kids

You get a single-file editor + live preview and an "Ask Assistant" pane so you can prompt or tweak a small game (the Simon board and WebAudio tones run in the browser). The interface is friendly and immediately usable for teaching or tinkering, but it's essentially a focused CodePen-style playground — useful and charming for lessons, not a novel platform — and would benefit from clearer onboarding, save/share, and structured exercises.