Sundown is a Mac menu bar app made by Jack Richards that warms and dims the display on a schedule. Between 5 July and 19 August 2026 it went through thirteen releases numbered 1.4, and reading them in order shows how much of the work was about the display behaving itself rather than about new buttons. This is that series, condensed from the release notes that went out with each update.

1.4.0 and 1.4.1, 5 July

1.4.0 was a large release. It added a Home tab with a live warmth dashboard, an Insights tab, a rebuilt scheduling engine, a glass sidebar and a six slide onboarding. Eleven minutes later 1.4.1 followed, because Settings could flicker or turn Sundown off, and the CPU watchdog thresholds were too eager.

1.4.2 to 1.4.5, 7 to 10 July

These releases, including two small patches numbered 1.4.2.1 and 1.4.2.2, were mostly about trust. 1.4.2 kept you licensed after reinstalling or moving Macs and removed idle CPU churn, 1.4.2.1 fixed a slow memory leak in the ambient light sensor path, and 1.4.2.2 stopped brightness snapping back to full after you turned it down. 1.4.3 fixed the screen turning white while recording with QuickTime or another capture tool, and a white flash when waking the Mac. 1.4.4 and 1.4.5 rebuilt the first run tour with a live preview, so you watch the display warm on the real popover instead of reading about it.

1.4.6 and 1.4.7, 14 and 16 July

1.4.6 brought touch to start: tapping a preset or dragging the warmth slider turns Sundown on, so there is no separate toggle to find first. Tint also started surviving lid close and reopen. 1.4.7 is small but worth reading, because at the daylight setting the colour maths had been returning a faint tint, and the fix made the neutral setting write an identity curve, so the display looks exactly as it would without Sundown.

1.4.8 and 1.4.9, 18 and 23 July

1.4.8 gave the Scheduling tab a calmer layout, with clearer day part zones and less chrome around the sunset curve. 1.4.9 fixed a bug where the Follow the Sun and Custom schedules could not override a warmth you had set by hand. It also patched sliders that had stopped dragging on macOS Sequoia 15.7.5, and gave polar night and midnight sun regions correct warmth, with transitions that no longer drift after a daylight saving change.

1.4.10, 19 August

The last of the series closed five holes in the XDR Boost safety path that could blow the display to white, and paused XDR Boost itself until its safety net could run on its own. Shipping the fixes with the feature paused was the honest choice, rather than holding the fixes back.

The 1.5 series picked up from here in September. If you are new to all of this and comparing options, Best Blue Light App for Mac in 2026 puts several side by side, and Sundown is where the current version lives.