Display Dimmer
Hardware + software control
Hardware brightness, with software dimming when needed.
Use DDC/CI on compatible external monitors, WMI on supported laptop panels, or software gamma dimming.
Free coreOptional one-time Pro
Windows app comparison
Display Dimmer vs Monitorian
Both apps can adjust monitor brightness. Here’s where their controls, automation and pricing differ.
Monitorian
Monitor brightness control
Brightness control for compatible monitors.
Adjust monitors individually or together, with optional Store add-ons.
Free coreOptional subscription
Feature comparison
Hardware support, saved presets, triggers and paid extras.
| Feature | Display DimmerFree + Pro | MonitorianGitHub installer 4.16.1 + Store add-ons |
|---|---|---|
| Brightness & color | ||
| External monitor brightness[1][8] | DDC/CI hardware controlFreeCompatible external monitors and connections. | DDC/CI hardware controlFreeCompatible monitors and connections. |
| Software dimming[12][8] | Built-in gamma dimmingFreeDims the image when hardware control is unavailable or disabled. It does not lower the backlight. | No general gamma dimming documentedMonitorian focuses on hardware control; its HDR SDR adjustment is a separate feature. |
| Built-in laptop display / WMI[10][18] | WMI hardware brightnessFreeOpt-in control for compatible internal panels; gamma is also available. | WMI / Windows brightnessFreeCompatible internal panels. |
| Color temperature[15][6] | Software color temperaturePreview / Pro30 minutes/day free; Pro removes the daily preview limit. | No software warmth control documentedA request exists; it is not a shipped integrated temperature control. |
| Contrast[1][7] | Software contrastFreeAdjusts the displayed image through gamma; separate from hardware brightness. | Hardware contrastFreeRequires compatible DDC/CI monitor support. |
| Presets & condition-based dimming | ||
| Saved presets[11][16] | Brightness, contrast + temperatureProSave levels per display, leave channels unchanged and recall from the app or automation. | No named preset picker documentedCommands can set configured levels; a request for a preset interface remains open. |
| Idle dimming[13][17] | Temporary brightness limitFree / ProAll displays idle dimming is free; individual displays and linked groups require Pro. | No built-in idle rule documentedThe developer suggests external inactivity automation. |
| Lock-screen dimming[2][17] | Temporary brightness limitProCap brightness while the Windows session is locked. | No dedicated lock rule documentedWindows event automation can call commands; it is not a built-in lock trigger. |
| Battery-power dimming[14][17] | Temporary brightness limitProCap brightness while the laptop runs on battery power. | AC / battery value syncFreeOptional /powerbind synchronizes Windows brightness values, rather than applying a brightness ceiling. |
| Low-battery dimming[1][2][17] | Battery-percentage thresholdProCap brightness at or below a chosen battery percentage; this condition can also apply while charging. | No dedicated threshold rule documentedNo built-in battery-percentage trigger was found in the reviewed feature or command docs. |
| Automation | ||
| Schedules[2][6] | Time-based schedulesFree / Pro1 All displays rule free; Pro adds more rules, display targeting and preset actions. | Daily Time CommandsSubscriptionConfigured through Microsoft Store add-ons. |
| App-based rules[2][6] | App-based rulesFree / Pro1 All displays rule free; Pro adds more, presets and targeting the display with a fullscreen app. | No focused-app rules documentedSubscription commandsConditional Commands respond to monitor values, not the active application. |
| Hotkeys[2][6] | Keyboard shortcutsFree / Pro2 All displays hotkeys free; Pro adds more, targeted controls and preset recalls. | Hot keys + Key CommandsSubscriptionConfigurable commands through Microsoft Store add-ons. |
| CLI / local API[2][5][7][16] | CLI + local APIProBrightness, contrast, temperature, state and advanced VCP commands. | Brightness + contrast commandsFree / SubscriptionFull command set paid; limited free control of the last-selected monitor is available. |
| Monitor tools | ||
| Multiple displays[1][6] | Individual or All displaysFree / ProManual per-display controls are free; targeted automation requires Pro. | Individual or in unisonFreeAdjust compatible displays separately or together. |
| Linked display groups[1][6] | Named linked display groupsProChoose displays to adjust together and target the group in automation. | In-unison adjustmentFreeShared adjustment is supported; no equivalent named group picker was documented. |
| HDR SDR brightness[3][8] | No dedicated SDR sliderDDC/CI depends on the monitor. Software gamma may be bypassed or reset under HDR. | SDR-content adjustmentFreeAvailable since the 4.13 installer release. |
| Other hardware controls[2][7] | VCP through the CLI/APIProAdvanced commands for supported monitor hardware; no general-purpose VCP control panel. | Monitor input commandsSubscriptionKey Commands can switch inputs where supported. |
| DDC/CI troubleshooting[1][8] | Per-display health trackingVerified results, possible-cause hints, pause and Try again. | Capability probes + logsUnreachable-monitor status and diagnostics. |
| Cost & source | ||
| Price[1][6] | Free + one-time upgradeOptional Pro; check your local price. | Free core + add-onsOptional Microsoft Store subscription. |
| Source code[4][1] | Closed sourcePublic documentation and releases. | MIT-licensed coreStore subscription add-on code is not public. |
Triggers are brightness limits. Display Dimmer triggers temporarily cap brightness while a condition applies, then restore the current levels or automation. They work with enabled DDC/CI, WMI and software paths; disabled brightness controls are skipped. Gamma dimming changes the image and does not guarantee backlight power savings. [17]
Your setup still matters. DDC/CI and WMI require compatible hardware. Software gamma works on most Windows SDR displays, but HDR may bypass or reset it. Try your own monitors before upgrading.
Key differences
What changes
in daily use?
Where the apps differ most.
Both support laptop and external displays.
Both offer DDC/CI for compatible external monitors and WMI for supported internal panels. Display Dimmer also includes software gamma dimming when hardware control is unavailable or disabled. Monitorian’s SDR-content control under HDR is a different feature. [10] [12] [3] [8] [18]
Save a setup, or dim for a condition.
Display Dimmer Pro presets save brightness, contrast and temperature per display. Idle dimming for All displays is free; Pro adds targeted idle, lock, battery-power and low-battery triggers. These triggers temporarily cap brightness. Monitorian has AC/battery value synchronization and configurable commands, but no named preset picker or equivalent built-in condition triggers were verified. [16] [17] [14] [11]
Monitorian offers an open core and HDR controls.
Monitorian’s published core is MIT-licensed; its paid add-ons are separate. It also offers hardware contrast and an HDR SDR-content brightness control. Display Dimmer provides software contrast and temperature, plus a Pro CLI and local API for presets, display state and advanced monitor commands. [4] [3] [7]
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.
Sources & notes
Something changed? Let us know ↗Reviewed October 10, 2026 against Display Dimmer’s current app implementation, Monitorian GitHub installer 4.16.1 and official Microsoft Store add-on documentation. The GitHub installer version does not establish the current Store version.
“Not documented” means no equivalent built-in feature was verified in the official project, command documentation and relevant developer discussions. Commands and external automation may still achieve similar results. This is a documentation review, not a monitor compatibility or performance benchmark.
View the 18 sources
- 01Monitorian: official project README ↗Hardware requirements, contrast, in-unison control, troubleshooting and Store add-ons.
- 02Monitorian: command documentation ↗Daily, conditional and key commands; input switching and command-line control.
- 03Monitorian 4.13: HDR SDR brightness ↗Release introducing SDR-content brightness adjustment under HDR.
- 04Monitorian: core license ↗MIT license for the published core; paid add-ons are separate.
- 05Monitorian: limited free CLI ↗Developer clarification of control for the last-selected monitor.
- 06Display Dimmer: Free & Pro ↗Feature limits, Pro display targeting and pricing.
- 07Display Dimmer: CLI / local API ↗Brightness, contrast, temperature, state and advanced VCP commands.
- 08Display Dimmer: DDC/CI vs gamma ↗Hardware and software brightness paths and their limitations.
- 09Monitorian 4.16.1: installer release ↗GitHub installer baseline checked for this comparison.
- 10Monitorian: internal-panel brightness code ↗WMI queries for compatible internal-panel brightness.
- 11Monitorian: preset-interface request ↗An open request for a built-in preset picker; commands are distinct from a named preset library.
- 12Monitorian: software dimming discussion ↗Developer explanation of the hardware-control focus and gamma distinction.
- 13Monitorian: inactivity automation discussion ↗Developer suggests an external inactivity script rather than a built-in idle rule.
- 14Monitorian: AC / battery brightness binding ↗The optional /powerbind behavior for Windows charging and battery brightness values.
- 15Monitorian: color-temperature request ↗Current request and developer response; not a shipped software warmth control.
- 16Display Dimmer: presets guide ↗Save per-display brightness, contrast and temperature; recall from the app and automation.
- 17Display Dimmer: triggers guide ↗Idle, lock, battery-power and low-battery brightness limits; free and Pro scope.
- 18Display Dimmer: laptop and monitor brightness ↗WMI for compatible internal panels; device and driver requirements.