The feature seems to have been inspired by a jailbreak tweak called Eclipse that brings Night Mode across the entire of iOS. While we’re yet to see Apple turn this into a stock iOS feature, it’s good to see that Twitter has taken the initiative to roll out the feature to their app.
If you use Twitter mostly during night, probably you should try the new night mode in Twitter app on your iPhone as it gives it a cool look.
How to Turn On Night Mode in Twitter
Step 1: Launch the Twitter app on your iOS device.
Step 2: Switch to the tab labelled Me, found in the bottom right corner of the app.
Step 3: Tap on the gear icon and choose Turn on night mode.