About the app
Stage Sidekick is an ear prompter for talks, speeches and presentations. It listens while you speak, follows where you are in your script, and speaks the next few words into your earbuds just before you need them. No more reading from a screen, no more losing your thread.
Prompts spoken into your earbuds
How it works
- Write or paste your talk. Lines starting with # become chapters; [pause 3s] and [notes] help you pace it.
- Pick your microphone and earpiece. Stage Sidekick only ever uses the devices you choose.
- Press Start and talk. Prompts come a few words ahead of you. Go off script and it waits until you are back.
Made for the stage
- Lost your place? Say your own phrase, like "Where was I", and the last prompt plays again.
- Clicker and foot pedal: jump between phrases and chapters, pause, repeat. Every key can be changed.
- An optional pause before each new chapter, for applause or a slide change.
- A setup checklist that checks everything by itself, guided tours and a How to Use guide.
- English, German and Spanish. Light and dark mode.
Private by design
Speech recognition runs on your Mac. Your voice is never recorded or sent anywhere. No account, no tracking, no ads. The speech-recognition model (up to 1.6 GB) downloads once on first use.
Requires a Mac with Apple silicon.
Privacy Policy
Stage Sidekick is made by KITOSO LLC. In short: the app does not collect, send or sell any personal data. Everything it does happens on your Mac.
Microphone and speech recognition
While you press Start, the app listens through the microphone you choose, to follow where you are in your script. Speech recognition runs entirely on your Mac. Your voice is never recorded to a file and never sent to us or to anyone else.
Your scripts and settings
They are stored only on your Mac, in the app's own folder.
Local log files
To help with troubleshooting, the app keeps a log file on your Mac for each listening session: the words the speech recognition heard, the prompts it played, timings, and the names of your audio devices. The app keeps the 60 most recent logs and deletes older ones by itself. Logs are only sent if you choose to: Help → Email a Log to Support… opens your Mail app with the newest log attached, and nothing is sent until you press Send. All logs are removed when you delete the app.
Internet
The app uses the internet only to download its speech-recognition model once (0.6 to 1.6 GB, depending on the model you choose) from Hugging Face (huggingface.co), where the model is published. Like any download, this shows your IP address to Hugging Face; nothing else is sent. There are no accounts, no analytics, no advertising and no tracking.
Voices
Prompts are spoken with Apple's voices installed on your Mac, or with your Personal Voice if you allow it. This also happens on your Mac.
When you contact us
If you email us, we receive what you send: your email address, your message and any files you choose to attach, such as a log file. We use it only to answer you and to fix problems in the app. We do not share it, and we delete it when it is no longer needed for that.
Changes
If this ever changes, we will update this page first, and the app will always ask you before anything is sent.
Contact
KITOSO LLC, support.stagesidekick@kitoso.co
Last updated: 21 October 2026
Terms of Use
These terms apply to Stage Sidekick, made by KITOSO LLC ("we"), however you got it. By installing or using the app you agree to them. If you got the app from the Mac App Store, Apple's Licensed Application End User License Agreement applies as well.
1. Your license
We give you a personal, non-exclusive, non-transferable license to install and use Stage Sidekick on Macs you own or control, for your own talks, presentations and rehearsals, including at work.
2. What you may not do
- Sell, rent, lease, lend, sublicense or otherwise pass on the app or copies of it, or include it in another product or service.
- Publish the app or its installer for download anywhere, for example on websites or file-sharing services, unless we have agreed to it in writing.
- Reverse engineer, decompile or disassemble the app, except where the law expressly allows it.
- Remove or change the app's name, icon or copyright notices.
- Use the app for anything unlawful.
3. Ownership
The app, its name, icon, texts and design belong to KITOSO LLC. You receive a license to use it, not ownership. Your scripts and settings are yours.
4. Open-source parts
The app contains WhisperKit by Argmax, Inc., used under the MIT License. The speech-recognition models it downloads are published under their own open-source licenses. These licenses stay in effect for those parts.
5. Live use
Stage Sidekick supports you during live talks, but speech recognition is never perfect: prompts can come early, late or not at all, and audio devices can disconnect. Always be ready to continue without it.
6. No warranty
The app is provided "as is", without warranties of any kind, as far as the law allows.
7. Limitation of liability
As far as the law allows, KITOSO LLC is not liable for indirect or consequential damages, for example a talk that did not go as planned. Our total liability is limited to the amount you paid for the app. Rights you have under consumer protection law are not affected.
8. Changes and ending
We may update the app and these terms; the version on this page applies. Your license ends if you break these terms; you must then delete the app.
9. Law
These terms are governed by the laws of the State of Florida, USA.
10. Contact
KITOSO LLC, support.stagesidekick@kitoso.co
Last updated: 21 October 2026
Support
Stage Sidekick is an ear prompter for live talks. It listens while you present and speaks the next words of your script into your earbuds just before you need them.
Requirements
A Mac with Apple silicon (M1 or newer) and macOS 14 or newer. About 2 GB of free space for the speech-recognition model, which downloads on first use.
Getting started
On the first launch the Setup Checklist opens: it checks your microphone, earpiece, voice and keys and shows what to fix. "Show me how" (top right) runs short guided tours, and Help → How to Use explains everything with pictures.
The app doesn't hear me
Check that Stage Sidekick is allowed in System Settings → Privacy & Security → Microphone. In the Setup Checklist, press Test next to the microphone and speak; the bar should move. Make sure the language matches the language you speak.
No prompts in my earbuds
Connect your earbuds first, then pick them as the earpiece. The app only uses the earpiece you pick and never switches by itself. "Test voice" plays a prompt there.
The voice sounds robotic
Download a better voice in System Settings → Accessibility → Spoken Content → System voice → Manage Voices…, then pick your language and a voice marked Premium or Enhanced.
My clicker doesn't work
Change the keys in Settings → Shortcuts: click a key, then press the clicker button. If nothing happens, the button sends a media key, which can't be used; set it to a key like F13–F18 in the clicker's own app.
Contact
Email support.stagesidekick@kitoso.co. Please tell us your Mac model, your macOS version and what happened. To send us a log, choose Help → Email a Log to Support… in the app: Mail opens with the log attached, and you decide whether to send it.