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DarkModeBuddy vs Nightfall: catalog facts
DarkModeBuddy	Nightfall
Free Free and open source under the BSD-2-Clause license.	Free Free to download from GitHub or Homebrew.
macOS	macOS
Switches theme by actual room brightness rather than clock time Lightweight background utility	One click to toggle dark mode Lightweight native Swift app
macOS only Depends on a Mac with an ambient light sensor	Does one job only macOS only, Catalina or later
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.