RedDimmer
RedDimmer vs BetterDisplay
RedDimmer and BetterDisplay both offer ways to adjust a Mac screen, but they serve different-sized jobs. RedDimmer is built around evening colour and dimming. BetterDisplay is a much broader display-management toolkit.
Choose RedDimmer for a focused free warmth-and-dimming routine. Choose BetterDisplay if you also need display scaling, virtual screens, hardware controls or advanced image adjustments. BetterDisplay already includes software dimming and colour controls.
Try RedDimmer's interactive preview →RedDimmer's Mac App Store release is in preparation.
RedDimmer and BetterDisplay: at a glance
| What matters | RedDimmer | BetterDisplay |
|---|---|---|
| Main purpose | Evening warmth and software brightness | Display management and image controls |
| Price | Free | Free features for non-business use; paid Pro options |
| Software brightness | 100% to 10% slider | Software dimming down to black documented |
| Colour adjustments | Warm-to-red slider and editable presets | Colour controls and advanced image adjustments |
| Display configuration | Individual settings for RedDimmer adjustments | Scaling, virtual screens and hardware controls |
| Getting it | Mac App Store release in preparation | Official releases and a Pro trial |
BetterDisplay references: BetterDisplay's official feature and licensing documentation ↗ · Official BetterDisplay guide ↗
A small routine instead of a whole display project
RedDimmer's everyday controls stay close to the thing you want to change: how bright and warm the screen looks. You can save neutral, amber and red combinations, apply them on a local schedule and pause them when you need normal output. Individual-display settings and app exceptions help fit that routine around your Mac work. The app is free, with no account or subscription required.
Explore RedDimmer's evening controls →When BetterDisplay is the better fit
BetterDisplay documents software dimming and colour control alongside HiDPI scaling, virtual displays, DDC controls and many other display features. Some capabilities are free for non-business use; additional features require a Pro licence, with a Pro trial available. If dimming is one part of a larger resolution, HDR or multi-display problem, that broader toolkit is worth considering. RedDimmer does not replace those display-management features.
BetterDisplay's official feature and licensing documentation ↗ · Official BetterDisplay guide ↗
For someone who just wants a darker red screen at night
Start by deciding whether you need display configuration at all. If your resolution, layout and monitor controls already work, a saved evening preset may be the whole job. RedDimmer provides that focused path: pick warmth, pick software brightness and choose when to apply it. If you already rely on BetterDisplay, review its existing controls first and avoid applying overlapping colour or dimming settings without checking the result.
Compare the appearance on your own display, keep text readable, and return to normal colour for colour-sensitive work. Our linked research explanations separate screen preferences from health claims.
Questions before you choose
Is RedDimmer a BetterDisplay replacement?
It can replace a focused warmth-and-dimming routine, but it is not a replacement for BetterDisplay's display scaling, virtual screens or broader hardware and image controls.
Does BetterDisplay already offer software dimming?
Yes. Its official feature list includes software dimming down to black and colour controls. RedDimmer's appeal is its focused free evening routine, not exclusive access to dimming.
Which is simpler for an evening preset?
RedDimmer is designed around warmth, software brightness and three editable presets. If those are your only requirements, that is a focused option; if you need broader display features, compare BetterDisplay's settings.
Sources and how we compare
BetterDisplay's official feature and licensing documentation ↗ · Official BetterDisplay guide ↗
This comparison is written by Guiix, the maker of RedDimmer. It uses the official product descriptions linked above and RedDimmer's current features. It is a feature guide; it does not report a head-to-head hardware test, clinical study or independent review. Other product names belong to their respective owners. Check the official release notes and licence terms for the version you choose.
A softer screen for your evenings.
Free warmth and dimming. Editable presets. A routine that fits your day.
Mac App Store release in preparation.