Engine sound for typing · macOS 14 or later
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Open Redline and type in any app. Check that the engine switch and volume are on. Redline does not request Input Monitoring or Accessibility access.
Quit and reopen Redline, confirm the power control is on, then type normally in TextEdit or the optional Scratch Pad. No keyboard privacy permission is required.
Yes. Redline reacts to an anonymous system event count while any app is active. It does not receive the key, characters, target application, or text and needs no keyboard privacy permission.
Revs follow the pace you have held. Start typing and the engine climbs through the gears. Hold a rhythm and it settles into a cruise. Push past your usual pace and it drops a gear and runs for the redline.
Sensitivity sets the typing speed that counts as full effort — put it just above your usual pace. Rev range (Relaxed → Sport) moves the shift points; it shows the actual rpm for the engine you have loaded.
The menu bar panel has volume, engine on/off, shift sounds, induction, and the notch display. The Induction switch controls a resonant intake voice that opens under load. Redline does not add a constant wind or blower track.
A short pause eases the virtual pedal and adds a trace of overrun. For privacy, every system-wide key-down is treated as the same anonymous driving input.
Open Settings → Garage, choose a preset, and drag the controls. The Garage applies changes to operating range, exhaust, combustion, induction, and cabin output while the engine runs. Cylinder count, layout, and firing pattern are read-only facts for the selected preset. Name the tune and choose Save as New.
Drag a value left or right to scrub it. Clicking without dragging does not jump the value. Hold Shift while dragging for fine adjustment.
Saved engines are plain JSON in
~/Library/Application Support/Redline/Engines/. Every field has a default,
so a working engine can be four lines. The folder contains a README describing each
field. Edit JSON when you want to change cylinder or firing data, then choose Reload.
Redline is a one-time purchase tied to your Apple Account. Sign in with the same account and choose Restore Purchase in the app.
Refunds are handled by Apple, not by us. Visit reportaproblem.apple.com.
Redline reads only changes in Apple's aggregate session key-down counter. It never receives a keyboard event and cannot identify a key, app, or text. Redline does not save or transmit keyboard activity or optional Scratch Pad text. Full details are in the privacy policy.