GammaDimmer • screen dimming 4+

Dim screen brightness in sync

Alin Panaitiu

    • $4.99



Free trial is available on the official website at

Dim the brightness of all your screens without compromising color accuracy.

Use handy sliders or keyboard shortcuts to keep the luminance of all your displays in sync.

Works with iPad Sidecar, DisplayLink and all external monitors:
• Dell
• LG
• Samsung
• BenQ
• Sceptre
• Xiaomi
• Acer
• HP
• ViewSonic
• USB Monitors

Note: Gamma Dimmer uses Software Dimming using Gamma (or a dark overlay where Gamma is not available).

It does NOT use DDC/CI to change the real hardware brightness of your monitors.

For adjusting the hardware brightness, volume or input of the monitor, check out my other Lunar Pro app on the official website.

What’s New

Version 1.0.1

• Fix "Trial Expired" being shown for valid purchases on some users

App Privacy

The developer, Alin Panaitiu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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