Screen Dimmer Night Filter

SmartToolsDev

About this app

Screen Dimmer lets you drop your screen brightness below the Android system minimum using a transparent overlay — then add a warm blue light filter for comfortable night-time reading.

KEY FEATURES:
• Sub-minimum brightness — go darker than your system slider allows
• Warm tint presets — choose Neutral, Warm, or Extra Warm colour temperature
• Persistent overlay service — the filter stays active across all apps
• Notification shade control — toggle the overlay on or off without re-opening the app
• Nightly schedule - set a start and end time and the dim turns itself on and off
• Brightness remembered — your last setting is restored automatically on relaunch
• Settings & support wired in — privacy policy, contact, and more-apps all accessible

PERFECT FOR:
• Night readers who find the system minimum still too bright
• Phone users in dark rooms who want a warmer, less jarring screen
• OLED device owners looking to reduce eye discomfort during low-light use
• Anyone who has hit the brightness slider limit and needed more

The app uses Android's SYSTEM_ALERT_WINDOW permission to draw a transparent overlay. A clear permission flow guides you through the one-time grant — no hidden or unexpected behaviour.

No account required. Your brightness and filter settings are stored locally on your device — nothing is transmitted.

Download Screen Dimmer and sleep better tonight.

WHY SCREEN DIMMER?

Even at its lowest setting, a phone screen can be painfully bright in a dark room — during late-night reading, in bed, or in a cinema. Screen Dimmer solves this by layering a transparent overlay on top of everything, letting you go well below the system minimum while keeping the screen perfectly readable. Add a warm tint to cut harsh blue light, and night-time use becomes genuinely comfortable.

Because it runs as a persistent overlay service, the dim level and warm filter stay active across every app, and the quick toggle in your notification shade means you never have to reopen the app to turn it off. Your last brightness setting is restored automatically every time. Nothing is uploaded — all settings live on your device.