Comfortable viewing, on your terms.
Fine-tune your Android display with extra dimming, adjustable warmth, saved scenes, and schedules that fit your routine.
Lumen Guard adjusts your display appearance; it is not a medical device or a substitute for professional eye care.
Use the overlay to make a bright display more comfortable in low-light environments.
Choose the colour warmth that suits what you are doing, from neutral to a softer evening tint.
Save your preferred dim and warmth combinations, then return to them without rebuilding your settings.
Set a start and end time for a scene so your preferred display setup can follow your daily routine.
Keep quick filter controls close at hand with the optional floating widget when it is enabled.
Notifications are optional. The filter still works if you leave them off; you simply will not receive status updates or reminders.
Lumen Guard uses Android's display-overlay permission only to show the filter across your screen.
Core settings stay on your device. The free version includes advertising, with privacy choices shown in the app where required.
A one-time Google Play purchase for an ad-free experience and full access.
Made for everyday comfort
Switch between brightness, blue light, and Calm Green filters.
Set a display routine that follows your day.
Make quick adjustments while you use other apps.
Bring filters, scenes, and routines together in one app.
Availability
Lumen Guard is available on Google Play. Install it to adjust display dimming, warmth, scenes, and schedules on your device.
Requires Android 8.0 or later
Version 1.12.11 | Free with optional premium purchase
