# pilotmoon/Scroll-Reverser

Per-device scrolling prefs on macOS.

Repository: https://github.com/pilotmoon/Scroll-Reverser
Canonical: https://ross.abutalabs.com/products/scroll-reverser
Homepage: https://pilotmoon.com/scrollreverser/
Language: Objective-C
License: Apache-2.0
License Family: permissive
Topics: macos
Last push: 2025-12-13T16:18:01+00:00

## Health v2 (maintenance only)
Score: 48/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 57, release rhythm 8, longevity 100
- inputs: {"age_days": 5425, "days_push": 263, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3576, forks 173 (observed 2026-08-28T04:08:10.829810+00:00)

## What it is
Scroll Reverser is a free, open-source macOS menu bar app that reverses the direction of scrolling, with independent settings for trackpads and mice (including Magic Mouse). It works by installing a Quartz event tap that intercepts and modifies scroll and gesture events, and also offers a wheel step-size control.

## Use cases
- use natural scrolling on trackpad but classic scrolling on mouse
- reverse mouse wheel scroll direction on mac
- fix scroll direction for magic mouse separately from trackpad
- control scroll wheel step size instead of scroll acceleration
- stop trackpad gestures feeling wrong when reversing scroll direction

## When to choose
- you want per-device scroll direction on macOS with separate trackpad and mouse settings
- you prefer a lightweight, self-contained open-source app over system hacks
- you use a wheel mouse and want fixed step scrolling instead of macOS acceleration

## When to avoid
- you are on Windows or Linux
- you only need the system-wide natural scrolling toggle already in macOS settings
- you need per-application scrolling rules rather than per-device

## Facets
- artifact type: application
- maturity: active
- function: developer-tools
- domain: desktop-applications, apple-ecosystem, developer-tools
- platform: -
- tags: scrolling, event-tap, trackpad, mouse, menu-bar-app, objective-c, open-source, macos

## Member repositories
- pilotmoon/Scroll-Reverser (main) score 48

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:10.829810+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:34:02.674141+00:00, confidence not recorded.
  - readme: https://github.com/pilotmoon/Scroll-Reverser (fetched 2026-08-28T04:08:10.829810+00:00, sha 9be801c5a9bd)
  - homepage: https://pilotmoon.com/scrollreverser/ (fetched 2026-08-29T09:27:35.535565+00:00, sha bb02e32f7492)
  - site_page: https://pilotmoon.com/about (fetched 2026-08-29T09:27:35.538525+00:00, sha 1f675b79bf72)
- Data as of 2026-08-30T08:39:29.467469+00:00.