If you use Android, Twilight is also great (same concept but for your smartphone): https://play.google.com/store/apps/details?id=com.urbandroid.lux https://play

If you use Android, Twilight is also great (same concept but for your smartphone): https://play.google.com/store/apps/details?id=com.urbandroid.lux https://play.google.com/store/apps/details?id=com.urbandroid...