The playground · runs in this tab

Take it for a read.

Five scripts, every dial, and room to paste your own. Nothing you put on this prompter is uploaded — it runs entirely in this tab, the way StageMind itself keeps your scripts on your machine.

Glassnothing leaves this tab
StageMind — Playground
voice-synced
  1. For those who haven't met me — I'm Sam, the older sister.
  2. I've known Jules since the day she was born,
  3. which means I'm holding thirty years of material
  4. and very strict instructions to use none of it.
  5. So instead, a short story about Dani.
  6. The first time Jules brought Dani home for dinner,
  7. our dog — who hates absolutely everyone —
  8. walked over and sat down on Dani's feet.
  9. Mom says dogs just know. I say check Dani's pockets.
  10. Either way — we knew before you two did.
  11. So raise a glass to Jules and Dani:
  12. may you always be that easy to sit with.
listening · 122 wpm00:42:07
interactive demo

This playground

An honest demo, all in the browser.

The ✦ rewrites are canned samples on the stock scripts and a fixed, deterministic trim on yours — ✂ Tighten is that same pass across the whole script. No AI runs on this page, nothing is sent anywhere, and when a line can't be improved, it says so. This is a feel test for the glass, not the co-writer.

The desktop app

The real instrument writes with you.

StageMind writes with frontier models — drafting, tightening, and restructuring in your voice — and its voice-synced scrolling listens as you deliver and keeps your pace. Local-first, so your scripts stay yours.

See how it works → More questions? The FAQ →
Curtain call

Felt right? Take the stage.

Join the launch list for early access and Founder Pass pricing — and bring the scripts you just rehearsed.

Early access, Founder Pass pricing, and the occasional product update. No spam — unsubscribe anytime.

Try it in your browser · StageMind