Volume Knob / Privacy
Your audio.
Your business.
Volume Knob is a macOS application developed and published by Pixelcop Research, Inc. This policy describes its privacy practices.
Last updated:
The short version: Volume Knob’s Mac audio controls work locally. The app sends no analytics, telemetry, or crash reports to Pixelcop. If you choose to connect Spotify, it communicates directly with Spotify to provide playback and device controls.
Local audio controls & preferences
Volume Knob reads connected audio-device information and controls your selected output on your Mac. It saves your shortcuts, hidden-device identifiers, per-device volume steps, Dock preference, and Spotify settings locally. Mac audio controls do not require an account or internet access.
The app does not use advertising or third-party analytics services. Pixelcop does not operate a server that receives information from the app.
Optional Spotify integration
Spotify is disabled by default. If you enable it and connect an account, sign-in takes place in your browser through Spotify. The app requests permission to read and modify playback state so it can display the current track and playback devices, control playback, change Spotify device volume, and transfer playback.
Authorization and API requests go directly to Spotify. They include authorization credentials and the device identifiers or playback commands needed for the action. Spotify also receives the technical information associated with those connections, such as your IP address. Track details, artwork, and playback-device information are retrieved from Spotify and its content services, not from Pixelcop servers.
Sign-in uses OAuth with PKCE. Access and refresh tokens are stored in macOS Keychain, separately for each Spotify Client ID. Volume Knob does not receive or store your Spotify password.
Spotify’s handling of information is governed by Spotify’s privacy policy.
Local storage & your choices
Preferences remain on your Mac until you reset or remove them. Spotify device metadata is cached locally to load the device picker quickly; it has no automatic expiry, but may be refreshed or removed by macOS or by you. Artwork may be held in memory and the system URL cache.
Disabling Spotify stops its integration but keeps saved credentials. Choosing Disconnect in Spotify settings removes the selected Client ID’s saved credentials and device cache from this Mac. Restoring general defaults disables Spotify but does not delete saved Keychain credentials. You can also revoke the app’s authorization in your Spotify account settings.
Data sharing
Pixelcop does not receive your local audio preferences, Spotify credentials, or playback information. We do not sell or share this information with advertisers. When enabled and authorized, Spotify processing is limited to the integration described above.
Apple & the Mac App Store
If you obtain Volume Knob through the Mac App Store, Apple handles the transaction and may process purchase, diagnostic, or other information under its own policies and your Apple settings. That processing is separate from data collection by Volume Knob.
For details, see Apple’s privacy policy.
When you contact us
If you email us for support, we receive the information you choose to send, such as your email address and message. We use it to help with your request. Our website and communications privacy policy explains how we handle that correspondence.
Children’s privacy
Pixelcop does not knowingly collect children’s personal information through Volume Knob. Optional Spotify access is subject to Spotify’s account and age requirements. If you believe a child has sent us personal information through a support request, contact us.
Changes to this policy
If the app’s privacy practices change, we will update this page and its revision date. Material changes will also be communicated in the app or its release notes.
Questions about privacy?
Contact Pixelcop Research, Inc. at [email protected].