Step 1: a raw screen recording with long pauses and a shaky cursor.
NEWZumi edits your recording from one sentence, on your Mac
Record once. Zumi does the rest.
The Mac screen recorder with an AI editor that runs on your Mac. Say what you want, see the plan on the timeline, press Apply. One take becomes a polished video, a vertical clip, a step-by-step guide and an interactive demo.
ZumCast is a Mac app. You can try the demos here, and download it on a Mac at launch.
- Free to start
- macOS 14 or later
- Works offline
- Every edit is one Undo
One take, three steps. Click a step to jump to it.
Five tools you juggle today
- Auto-zoom
recorder - Screenshot
tool - Docs and
guides - Interactive
demos - AI video
editor
Meet Zumi
An editor that takes requests.
Say what you want in plain English. Zumi plans the edit, shows it on the timeline and waits for you. Nothing changes until you press Apply, and one Undo takes it all back.
- “Cut the pauses.” Long gaps and fillers, gone.
- “Make it vertical.” A 9:16 version with its own crop.
- “Blur anything private.” Emails, keys and faces, found on your Mac.
One take, seven outputs
Stop recording the same thing twice.
The video, the short clip, the docs and the demo all come from the same take. Click an output to see what you get.
Without ZumCast7 exports across 4 appsAbout 3 hours (typical estimate)
With ZumCastOne take, one clickAll seven, made in seconds on your Mac
Every format
Vertical isn't the wide one squeezed.
Each version keeps its own crop and camera position, and captions move clear of app buttons on Shorts and Reels.
Features
Everything a demo needs.
Recording, editing, screenshots, branding and sharing, in one Mac app.
- Auto-zoom and a smooth cursorZooms follow your clicks and typing. Shaky moves are smoothed.
- Edit by textDelete words in the transcript and the video cuts with them.
- Smart redactionEmails, keys, cards and faces found on your Mac and blurred for good.
- A teleprompter that listensYour script scrolls as you speak and waits when you stop.
- Screenshots on 102 wallpapersScrolling and web page capture, markup, frames and tilt.
- Search what you saidFind a take by a word you said or a button you clicked.
Turn off Wi-Fi. Everything still works.
Recording, transcripts, captions, redaction, organising and Zumi all run on your Mac. Something leaves only when you make a share link.
Pricing
Start free. Pay once for Pro.
Basic
$0 free, no card needed
Unlimited recording and editing. Exports are limited and watermarked.
Pro LAUNCH PRICE
$49 once
$9 at launch for the first 100, then $19 for the next 100, then $49.
No subscription. Pay once. Yours to keep.
Launching soon
Record once. Zumi does the rest.
ZumCast isn't available to download yet. It's in final testing, and the Mac download will be right here at launch, free to start.
ZumCast is a Mac app (macOS 14 or later). Come back on your Mac to download it.
macOS 14 or later · Free to start