It’s the best implementation of “night” mode ever — more like “dark” mode. It adjusts based on your phone’s brightness, so if it’s night time but you’re in a bright room you’ll still get light mode. Vice versa, if it’s morning but you’re hiding under the covers, you’ll get dark mode. There’s a slider in Tweetbot’s setting that let’s you adjust at what brightness level it flips, and it took a little bit of playing with it to get it just right (I’m mystified by their default location of directly in the middle), but once I did it is completely set-and-forget. I wish I could do something similar for Defomicron’s dark mode.