Penumbra - Screen Dimmer

Penumbra dims your screen below what your phone's brightness slider normally allows — perfect for reading in bed, dark rooms, or protecting your eyes at night.

No ads. No paywall. No premium tier. Every feature is free, forever.

FEATURES

• Dim below system minimum — go darker than your brightness slider lets you
• Warm filter — reduce blue light with an adjustable amber tint
• Quick Settings tile — toggle instantly from your notification shade
• Custom presets — save your favorite dim + warm combinations
• Auto Schedule — set ON/OFF times and Penumbra dims itself every night
• Auto-off Timer — long-press to dim for a set time, then it turns off by itself
• Extra Dim — an optional deeper dim level for total darkness
• Shake to disable — shake your phone to instantly undim
• Tasker / Automate integration — control Penumbra from your automation workflows
• Works on phones, tablets, and foldables, in portrait and landscape
• Full accessibility support, including TalkBack

Penumbra needs the "Display over other apps" permission to draw its dim overlay — this is the app's only real function, not an extra feature bolted on.

No account required. No data sold. No tracking beyond anonymous crash reports and usage analytics to help fix bugs.

Recent changes:
Groundwork to fix the brief full-brightness flash some devices show at night.