Notes only you can see.

Yes, on the capture pipelines modern meeting apps use, the CasperTalk window is simply not part of the share, recording or screenshot — you see it, nobody else does. Two habits keep it that way: turn Stealth Mode on before you start sharing and leave it on, and if you want zero exposure, share only the Keynote or PowerPoint window instead of the whole screen — another window can't be inside a window share by definition. The app's welcome tour walks through both.

On a Mac, Keynote and PowerPoint; on Windows, PowerPoint. The prompter follows the live slideshow and shows that slide's notes. You can import a .pptx file or pull the notes straight out of the presentation you have open. Google Slides is on the list.

Yes. CasperTalk listens on its own tap and steps out of the way of Zoom, Meet and Teams, so your microphone works in the call exactly as before. It's also tuned so the other side's voice coming out of your speakers doesn't scroll your script.

No. Download, open, paste your notes. There is no sign-up, no login and nothing to sync. Buying Pro gives you a license key; that's the only thing you ever enter.

No. $29 once, yours for good, updates included. One key unlocks one computer, Mac or Windows — activate it on the one you present from.

Two things. Each script holds up to 5,000 characters — around 800 words, a six-minute talk — and you can have as many scripts as you like. A longer paste or deck is kept up to that, and the Scripts window explains that the rest wasn't added. And the two features that do the work for you, Voice-Follow and Slide Tracking, come with 1,000 words free — a one-time allowance, not a monthly one — which is enough to use them on a real talk before you decide. Words only count while one of those two is on, and a talk that starts with words left always runs to the end. Everything else — manual and constant-speed scrolling, Stealth Mode, styling — is free, forever. Limits are only ever checked before you start; nothing stops mid-talk.

Nowhere. Scripts and imported decks are files on your computer; microphone audio is analysed in memory for speech activity and never written or sent anywhere. This website sets no cookies; it counts visits with cookieless analytics that store nothing in your browser — details on the privacy page.

Mac: any Mac on macOS 14 Sonoma or later, Apple silicon or Intel — a native Swift app that lives in your menu bar. Windows: Windows 10 (version 2004, May 2020) or later, and Windows 11, 64-bit — it installs per-user with no admin rights and lives in the tray by the clock. Same features on both, and one Pro key works on either.

Yes — on Windows 10 version 2004 and later, Stealth Mode uses the same capture exclusion that password managers rely on, so Zoom, Teams, Meet, OBS and the Snipping Tool never see the prompter while you do. On older Windows 10 builds the prompter can only be blacked out in a share, so CasperTalk tells you and suggests sharing the PowerPoint window instead.