SparkleScroll
Copyright 2026 Sparkle

Scroll transformation logic adapted from Scroll Reverser 1.9.
Changes: Swift implementation, public APIs only, SparkleScroll interface,
independent axis processing, sandbox packaging and configuration preset.

Original upstream NOTICE follows, unmodified:

Scroll Reverser
Copyright 2011 Nicholas Moore

This software is released under the the Apache 2.0 License (see LICENSE).

The name "Scroll Reverser" and the application icon are
trademarks and may not be used by derivatve works (except as required to
describe the origin of the work).