Works on macOS 13 Ventura and later

Fix your MX Master scroll on Mac.

Turn the thumb wheel into smooth vertical scrolling in 30 seconds. No Logi Options+ conflict, no lag, no fuss.

Download Free See it work →

MX Master 3, 3S, 4 · Bolt or Bluetooth

ScrollShift menubar popover with the conversion enabled and the status badge showing Active

The problem

Logitech locks the thumb wheel to horizontal.

Logi Options+ has refused to expose vertical remapping for years. The wheel ends up either useless or doing something you don't want — depending on the app.

The fix

Intercept and rewrite at the system level.

ScrollShift hooks the macOS event tap, detects the thumb wheel signature, and rewrites it as vertical scroll. Sub-millisecond latency. Doesn't conflict with anything else you have running.

Everything you need. Nothing you don't.

Free

Just works.

Instant horizontal-to-vertical conversion
10-step sensitivity slider
Invert direction toggle
Launch at login
Native menubar app — no Dock clutter

Pro

Power users, this one's for you.

Per-app profiles (e.g. fast in Chrome, precise in Figma)
Smooth scrolling engine with linear / natural / aggressive curves
Custom acceleration and dead zone
Optional horizontal passthrough per app
Future Pro updates included

Simple pricing.

Free works forever. Upgrade once when you want the power features — no subscription, no nonsense.

Free — Download Pro — $12 one-time

No subscription · 30-day refund · One purchase = all your Macs