knob on
Privacy
Updated October 17, 2026 · Knob On 1.0
Your patch stays between your devices
Knob On connects directly to Knob On Bridge in VCV Rack on your local network. Control values, parameter names, mapping information, and connection messages travel between the app and Rack so that your controls stay in sync. They are not sent to a developer-operated server.
What stays on your device
The app saves your control labels, colors, touch ranges, and manually entered Rack address in its local preferences. Mappings are saved in your Rack patch on your Mac. The app does not require an account and does not include advertising, analytics, tracking, or third-party SDKs.
Local Network permission
The app uses Local Network access to discover and connect to Rack. You can change this permission in iOS or iPadOS Settings. Without it, the app cannot connect to Rack on your network.
Network connection
The current connection is not encrypted and does not use pairing authentication. Use Knob On only on a trusted local network. Do not expose the Bridge port to the internet.
Data collection
The developer does not collect personal information through the app. Knob On does not send usage reports or control data to the developer. Apple may separately provide diagnostics according to your device settings and Apple's privacy policies.
Contact
Email hi@zui.ooo.