Privacy policy
Last updated June 15, 2026
Who we are
Mutter is a dictation app for macOS, operated by Mutter Voice, LLC and available at muttervoice.com. This policy explains what information the app and the website handle, and what we do and do not collect. Questions go to support@muttervoice.com.
Your voice
Private mode transcribes entirely on your Mac. Your audio is processed in memory on your own hardware and is never sent anywhere. It works with the network off.
Cloud mode sends each utterance over an encrypted connection to our server, which forwards it to our speech provider for transcription. The audio is processed in memory, is not stored by us, and is not used to train models. What comes back is text; we keep no copy of it.
Mutter never records in the background. The microphone is live only while you hold the push-to-talk key.
Cloud cleanup
If you enable cloud features, the transcribed text (never audio) can be sent to our server for higher-quality formatting by a language model. The text is processed transiently, is not stored by us, and is not used for training. Cleanup is off by default and requires your explicit consent in the app.
Your dictation history
Every dictation is saved to a local database on your Mac before it is pasted, so you never lose a word. That history stays on your machine, scoped to your account, and we cannot read it. Deleting entries in the app, or removing the app and its data, removes them from your Mac. Your usage stats are computed locally from this history.
Your account
To run your subscription we store, on our backend:
- Your email address and authentication records.
- Your subscription status, plan, and billing period.
- Usage metadata for cloud dictations: timestamps, durations, word counts, language, and processing times. This is what enforces plan quotas.
We never store your transcript text or your audio on our servers. Usage rows are metadata only.
Payments
Billing is handled by Polar, our merchant of record. Polar processes your payment details; we never see or store your card number. Polar’s own privacy policy applies to the checkout.
The website
The in-browser demo at /try sends the short clip you record to our transcription provider, processes it in memory, and discards it; nothing you say in the demo is stored. If you give us your email address on the site, we keep it to contact you about Mutter and nothing else. The site uses no third-party analytics or advertising trackers. Our hosting provider keeps standard server logs (such as IP address and request time) to operate the service.
Software updates
The app periodically checks for updates by fetching a release feed. That request carries standard connection metadata (such as your IP address) and no personal identifiers.
Service providers
We rely on a small set of providers to run Mutter:
- Supabase for accounts, authentication, and subscription records.
- Groq for cloud transcription and cloud text cleanup.
- Polar for billing, as merchant of record.
- Vercel for hosting the website.
- GitHub for hosting app downloads and the update feed.
We do not sell your data, and we do not share it with anyone beyond these providers.
Retention and deletion
Account data is kept while your account exists. To delete your account and its data, email support@muttervoice.com from your account address and we will remove it. Your local history is yours: it lives on your Mac and is deleted when you delete it.
Changes
If this policy changes in a way that matters, we will update this page and the date above. Material changes to how we handle your voice or your transcripts will be called out in the app before they apply to you.