Your voice stays on your Mac.

Overview

Murmur is built privacy-first. Audio is captured by a local Swift speech daemon and transcribed on your Mac, and the transcript is pasted straight into the frontmost app and never stored. Murmur runs no server of its own. The one external dependency is Apple's Speech framework, which may handle recognition requests according to Apple's own privacy policy.

Data we collect

None. Murmur does not collect, transmit, or share any personal data, and runs no analytics. Audio is captured locally by the Swift speech daemon and the resulting transcript is typed into whichever app is frontmost. The speech daemon talks only to the desktop app over a loopback address.

How your data is processed

• Audio capture and speech recognition are performed by a local Swift daemon using Apple's Speech and AVAudioEngine frameworks.
• The speech daemon listens only on a loopback address (127.0.0.1); nothing it does is exposed to the network.
• Murmur has no account, no sign-up, no analytics, and no third-party telemetry SDKs.
• Transcripts are pasted straight into the frontmost app and are not stored by Murmur.
• Apple's Speech framework may process recognition requests according to Apple's own privacy policy; Murmur adds no server of its own.

Permissions

• Microphone, required to capture your voice for dictation.
• Speech Recognition, required so Apple's Speech framework can transcribe audio.
• Accessibility, required for the global Option-tap listener and to paste the transcript into the frontmost app.

Third-party services

• Apple Speech framework (SFSpeechRecognizer) and AVAudioEngine, used by the bundled Swift daemon to capture microphone audio and perform recognition locally. Apple may handle speech requests according to its own privacy policy.
• Electron, used as the desktop shell. The packaged app is self-contained and does not phone home.

Children's privacy

Murmur does not collect any data from anyone, including children. There are no accounts, no sign-up flows, and no age-gated features.

Data retention and deletion

Murmur does not persist transcripts. Audio is captured momentarily by the speech daemon to produce the transcript that is typed into whichever app is frontmost, and it is not written to disk by Murmur. Uninstalling Murmur removes the app and its bundled daemon immediately. There is no server-side copy to delete because Murmur does not run a server.

Changes to this policy

If Murmur ever starts doing something new with your data, this page will be updated before that change ships, and the "last updated" date above will reflect it.