Display Dimmer
Hardware + software control
Hardware and software brightness.
Use hardware control where supported, or software dimming when needed.
Free coreOptional one-time Pro
Windows app comparison
Display Dimmer vs Twinkle Tray
Compare brightness control, automation and cost. Find the right fit for your screens.
Twinkle Tray
Free & open source
Free hardware controls + automation.
Schedules, app profiles and supported monitor settings, without a paid upgrade.
Completely freeOpen source
Feature comparison
Free features, paid extras and hardware requirements.
| Feature | Display Dimmer2.2.10 · Free + Pro | Twinkle TrayStable 1.17.2 |
|---|---|---|
| Brightness & color | ||
| Hardware brightness[5] | Hardware brightnessFreeCompatible external and built-in displays. | Hardware brightnessFreeCompatible external and built-in displays. |
| Software dimming[3] | Built-in gamma dimmingFreeChanges the image, not the backlight. | No built-in gamma optionStable 1.17.2 uses hardware brightness paths. |
| Color temperature[2] | Software temperaturePreview / Pro30 minutes/day free; unlimited with Pro. | Monitor hardware controlFreeRequires a supported DDC/CI feature. |
| Automation | ||
| Schedules[2] | Time-based schedulesFree / Pro1 All Displays rule free; more with Pro. | Time, idle + sun positionFreePer-display scheduling included. |
| App-based rules[2] | App-based rulesFree / Pro1 All Displays rule free; more with Pro. | Focused-app profilesFreeBrightness changes for active apps. |
| Hotkeys[2] | Keyboard shortcutsFree / Pro2 All Displays hotkeys free; more with Pro. | Per-display + all-displayFreeConfigurable shortcuts included. |
| CLI / local API[5] | CLI + local APIProBrightness, contrast, temperature and state. | Brightness + VCP commandsFreeCommand-line control while running. |
| Monitor tools | ||
| Multiple displays[4] | Individual or All DisplaysPer-display automation requires Pro. | Individual or linkedNormalization and calibration curves. |
| HDR SDR brightness[4] | No dedicated SDR sliderDDC/CI needs compatible hardware; gamma works on most SDR displays. | Dedicated SDR sliderControls SDR content while HDR is on. |
| Other hardware controls[2] | VCP through the CLI/APIProNo general-purpose hardware-control GUI. | Controls in the interfaceSupported volume, inputs and custom VCP. |
| DDC/CI troubleshooting[10] | Per-display health trackingVerified results, possible-cause hints, pause and “Try again”. | Detection + debug reportMonitor-connection troubleshooting. |
| Cost & source | ||
| Price[1] | Free + one-time upgradeOptional Pro; check your local price. | Completely freeNo paid feature tier. |
| Source code[6] | Closed sourcePublic documentation and releases. | Open sourceApplication source is MIT-licensed. |
Your setup still matters. DDC/CI depends on the monitor and connection. Software gamma works on most Windows SDR displays, but HDR may bypass or reset it.
Key differences
What changes
in daily use?
Here’s where the two apps take a different approach.
Hardware and software are different tools.
Both apps control compatible monitor hardware. Display Dimmer also includes gamma dimming, which changes the image rather than the physical backlight. Twinkle Tray 1.17.2 has no gamma-dimming control. [3]
Compare the free features, not just the download.
Twinkle Tray includes schedules, app profiles and hotkeys for free. Display Dimmer includes a limited set in Free; Pro expands their number and display scope, and adds unlimited software temperature control. [2]
Look at which controls you will actually use.
Twinkle Tray has a concise CLI for brightness and VCP commands. Display Dimmer Pro has a documented local API and broader CLI for display targeting, state, brightness, contrast and temperature. Twinkle Tray exposes more monitor-specific controls in its interface. [1]
How they’re built.
Display Dimmer is built with WPF and .NET; Twinkle Tray uses Electron and Node.js. Those are different approaches to building a Windows app, but they say little about the experience on your PC. [5]
Interactive preview
Try Display Dimmer for yourself.
Use the live preview below to see how the controls work. It changes only the simulated monitor; install the free app to test DDC/CI and software dimming on your own screens.
This page compares Display Dimmer 2.2.10 with Twinkle Tray 1.17.2 using the sources below. We haven’t benchmarked performance or tested compatibility across monitor setups; your monitor and connection still matter.
Show the 10 sources
- 01Twinkle Tray: product site and documentation ↗Pricing, hardware support and links to the project.
- 02Twinkle Tray 1.17.2: settings and labels ↗Profiles, schedules, hotkeys and hardware-control settings.
- 03Twinkle Tray 1.17.2: tagged source and release notes ↗Stable-release hardware brightness paths and capabilities.
- 04Twinkle Tray: tagged stable releases ↗1.17.0 HDR controls and 1.17.2 calibration/VCP changes.
- 05Twinkle Tray 1.17.2: README and CLI ↗Command-line syntax and supported brightness paths.
- 06Twinkle Tray: MIT license ↗Application source license.
- 07Display Dimmer: Free & Pro ↗Free and Pro features; prices depend on region.
- 08Display Dimmer: CLI / local API ↗Command-line and local automation documentation.
- 09Display Dimmer: DDC/CI vs gamma ↗Control paths and software-dimming limitations.
- 10Twinkle Tray: issue reporting guide ↗Detection information and troubleshooting reports.