Product interface
See Switcher in context.
Open any image for a closer look. Product mockups and interface captures use privacy-safe content.
Product overview
A privacy-safe visualization of Switcher's compact native HUD, shown at the scale it occupies during real use.
The problem
Why this needed to exist.
Combining keyboard remappers with separate window switchers introduces synthetic events, visible flicker, and configuration that breaks as macOS changes. A basic navigation action ends up depending on several moving parts.
How it works
One focused system, built around the job.
A tiny native macOS app (~600 lines of Swift) that binds any two keys to hide the frontmost window or open a fast app switcher. Designed for the 英数 and かな keys on a JIS keyboard — they sit under your thumbs and clash with nothing. Configurable for ANSI too.
“Replaces a fragile Karabiner + AltTab combo that flickered constantly on macOS Tahoe. One process, no synthetic events, no flicker.”
Useful for
Where it earns its place.
- Move through open apps without reaching for Command-Tab
- Hide or minimize the frontmost window, including fullscreen apps
- Turn the JIS 英数 and かな keys into useful thumb controls
- Map the same two actions to comfortable ANSI keyboard keys
Capabilities
What it does today.
- Hide / minimize the frontmost app — windowed or fullscreen
- Fast app switcher: tap to advance, Enter to commit
- Single-process design (no flicker like Karabiner + AltTab)
- JSON-configurable bindings
