Twilight Pro is currently a Deal of the Week in some countries : r/Android
Twilight Alternatives for Windows: Top 10 Color Temperature Tools and similar apps | AlternativeTo
Twilight for Android: stop your mobile device keeping you awake at night! – View from the Potting Shed
Twilight: Blue light filter - Apps on Google Play
Led Night Light Us/eu Plug In Twilight Dimmer Sensor Wall Night Lamp Butterfly For Bedroom Hallway Stairs Room Decoration - Novelty Lighting - AliExpress
Using Twilight for automatic late night TV dimming – Steve Zazeski