Twitter just updated its official application for iPhone and iPad by adding the expected 'Night Mode' that already have some third party applications like Tweetbot.
Of course, unlike Tweetbot, night mode can not be activated by a touch gesture, but will have to access the application settings to select when we want to be active and when not.
On the other hand, it seems that if we said active mode, it is automatically deactivated the next morning, something like what happens with iOS 9.3 Night Mode.
In short, it seems that gradually all applications are adding a dark subject, a feature that rumor could also reach the iPhone 7 10 iOS hand.
Twitter is available for free, it is universal and compatible with the Apple Watch.