Ember – Blue Light Filter

Ember puts a warm, adjustable color filter over your screen to cut blue light and reduce eye strain without interrupting what you're doing. Free forever, with a one-time Pro upgrade for the full experience. No subscriptions. No ads. Ever.

FREE
Filter on/off — one tap in-app or straight from your Quick Settings tile, without opening the app
3 color presets — Warm amber, Deep red, and Neutral dim gray to get started
Adjustable intensity — from a subtle tint to a deep night mode
Brightness control — adjust screen brightness directly from Ember as a quick shortcut

PRO — one-time, not a subscription
10 color presets — Warm, Deep Red, Dim Gray, Candle, Amber, Rose, Pink, Sunset, Yellow, and Green
Scheduled filter — set a start and end time, Ember activates itself every evening automatically
Sunrise/sunset schedule — set the filter to turn on at sunset and off at sunrise, adjusting automatically with the seasons; fine-tune with up to 1-hour offsets

WORKS ON EVERY APP
Ember uses an accessibility overlay to draw the filter, which means it stays on across everything — social media, games, maps, YouTube, reading apps. For banking and other secure apps, a compatibility mode is included.

SIMPLE. PRIVATE. RELIABLE.
No account required. No sign-in, no cloud sync, no data sent anywhere. All settings are stored locally on your device. Ember runs quietly in the background as a foreground service and shows a minimal status notification while active.

PERMISSIONS
Ember requests system permissions that must be granted once in Settings
Display over other apps — required to draw the color overlay on top of other content (this is how every screen overlay app works)
Accessibility service — provides extra compatibility for secure apps (entirely optional)
Modify system settings — only needed for the optional in-app brightness slider

Ember does not collect, transmit, or store any personal data.

Built for people who actually use their phones at night and want a simple, reliable blue light filter that stays out of the way.