Both applications add brightness control to Windows, and both can reach external monitors over DDC/CI. The real differences are how you get them, where the controls live, and how much configuration they offer.
| Feature | Brightness Control (Microsoft Store) | Twinkle Tray |
|---|---|---|
| Distribution | Direct download from this site, installed with a standard installer | Direct download from this site |
| Price | Free to install | Free and open source |
| Where you control it | App window plus a tray presence | System tray flyout with one slider per display |
| External monitors | Supported where the monitor exposes DDC/CI | Supported where the monitor exposes DDC/CI |
| Multiple monitors | Each detected display gets its own control | Each detected display gets its own slider, with linked adjustment |
| Keyboard shortcuts | Depends on the current app version | Configurable hotkeys for brightness up and down |
| Extras | Straightforward interface aimed at quick adjustment | Time-based adjustments, per-monitor naming, normalisation options |
| Best for | Store-managed PCs and users who avoid classic installers | Multi-monitor desks and users who want tray sliders and hotkeys |
More detail on the Microsoft Store brightness control app.
Read the Twinkle Tray overview, the brightness slider explained, or go to Twinkle Tray download.
Software cannot invent hardware features. If a monitor has DDC/CI disabled, sits behind an adapter or KVM that drops the channel, or exposes no brightness control at all, both apps will fail the same way. Start with DDC/CI monitor control and the fixes in fix external monitor brightness on Windows. To go darker than the panel's minimum, use an overlay display dimmer.
Brightness app
A Windows brightness control application with a simple slider interface for every connected display.
Independent application
A separate application with per-monitor brightness sliders in the system tray.
These are two separate applications. Both download directly from this site.
No. They are separate Windows applications from different developers. The similarity is that both adjust display brightness from within Windows.
Both rely on DDC/CI, so hardware support matters more than the app. If a monitor ignores one of them, it will usually ignore the other for the same reason: DDC/CI disabled, an adapter in the chain, or a KVM switch.
Not recommended. Two utilities sending brightness commands to the same display can fight each other, making levels jump or snap back.
Hardware brightness stops at the panel's floor. To go darker you need a software overlay dimmer, described on our display dimmer page.