Sundown Sleep Light

Turn your iPhone into a calm bedside sunset. Warm light fades to deep red to darkness — one tap, fully offline, no account.

Sundown turns your iPhone into a quiet bedside sunset light. Tap Start and the room eases from warm evening light, through orange and deep red, into darkness — using only the hardware already in your phone.

Two light sources work together: the rear light bounces a soft glow off a nearby wall, and the screen shows a warm color that dims to a deep-red afterglow.

• One-action daily use: open the app and tap Start Sundown.
• Choose a length from 1 to 120 minutes.
• Reveal temporary controls with a tap: time remaining, +10 minutes, or End.
• Calibrate the wall glow and screen glow once to fit your room.
• Optional local bedtime reminder that your sunset is ready.
• Sundown Pro (one-time): start with Shortcuts & Siri, custom sunset profiles, sunrise, and a widget.
• Works entirely on your device. No account, no network, no tracking.

Sundown is a light, not a sleep tracker or medical device.