Keep-awake, fan control, battery charge limiting, per-app audio, display tuning, casting, menu-bar tidying, and a phone remote — one native menu-bar instrument panel. One price. No subscription.
Apple Silicon · macOS 14+ · no accounts, no analytics, no telemetry

Native SwiftUI, designed like an instrument panel: glance, adjust, forget. And a hard rule underneath — the worst case is always plain macOS default behaviour.

Keep the Mac awake for an hour, a meeting, or while a download finishes. Plain-language rules (“while Final Cut is running”), clamshell mode, and a schedule.

See every fan, set a curve or a fixed speed — real SMC control with a fail-safe: quit or crash and macOS is instantly back in charge.

Charge limiting that actually holds, top-up on demand, and health history. Your battery stops living at 100%.

Per-app volume, 10-band EQ and routing. Device-level EQ. A built-in loopback driver. Record any app’s audio. Audio Unit hosting.

One brightness slider from gamma-dim through hardware to XDR boost. Resolution, rotation, blackout, and config protection.

A self-verifying wizard with real test patterns — then bake the result into a proper ICC profile. Your display, actually calibrated.
Hide the icon clutter. ⌘-drag icons behind Rein’s slim ⋮ divider, click the ‹ chevron to peek, and they tuck themselves away again.
Stream a 4K HEVC MKV to a Chromecast or Google TV with every pixel intact — Rein repackages instead of re-encoding, and only steps quality down if your network genuinely can’t keep up (then back up when it recovers).
A real multi-touch trackpad with press-and-hold drag, a live view of the Mac’s screen with smart zoom, a keyboard, media keys, and one-tap sleep — over any network, end-to-end encrypted.