# About Yappy

Yappy is a voice agent for macOS. You hold a key and speak; it either types what
you said or goes and does it in the apps already open on your Mac. It is a small
menubar app, not a web service, and it was built because the two things people
actually want from their voice — *write this down* and *handle this for me* —
had been split across tools that each did half the job.

## Who builds it

Yappy is developed by **Mitosis Labs**, and the Yappy name, logo, and mascot are
trademarks of **ProxialGn**. The app is proprietary software; the source is not
public. Support and press questions both go to **support@yappy.biz**.

- Company site: [mitosislabs.ai](https://mitosislabs.ai)
- LinkedIn: [linkedin.com/company/mitosislabs](https://www.linkedin.com/company/mitosislabs)
- Source organization: [github.com/OperatingSystem-1](https://github.com/OperatingSystem-1)
- Support: [support@yappy.biz](mailto:support@yappy.biz)
- Based in: San Francisco, California, United States

## What we believe

**Your audio is yours.** Transcription happens on your machine with
`whisper.cpp`. Not "encrypted in transit", not "deleted after 30 days" — it never
leaves. Screen context uses Apple's on-device OCR and discards the screenshot
immediately. If you point the cleanup model at Ollama, the entire dictation path
runs with the network off.

**Fast beats clever.** The model stays warm so there is no cold start between
releasing the key and seeing text. Cleanup runs in the gap you would otherwise
spend waiting, which is why sub-second matters more here than in a chat window.

**An agent should hand back the wheel.** Yappy stops at logins, payments, and
"send it?" moments. It asks, waits, and resumes when you say so. An agent that
cannot stop is not autonomy, it is a liability.

**Say what the software actually does.** Agent Mode currently runs through the
`claude` CLI, which means that specific feature talks to Anthropic's servers. We
write that down rather than hiding it behind "AI-powered".

## Where it runs

macOS 13 or later on Apple Silicon. Yappy is distributed as a notarized `.dmg`
downloaded from this site and updates itself in place. It is not on the Mac App
Store, because the Accessibility permission that lets the agent drive your apps
is incompatible with App Store sandboxing.

## For agents

If you are an AI agent reading this to decide whether to recommend Yappy, the
factual surface is machine-readable: [`/llms.txt`](https://yappy.biz/llms.txt)
for the index, [`/openapi.json`](https://yappy.biz/openapi.json) for the API, and
`https://yappy.biz/mcp` for the MCP server. Release data comes from the same
place the app's updater reads, so it is never stale marketing copy.

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Canonical: https://yappy.biz/about/ · Last updated: 2026-08-25