Twitter has a popular iPhone app, but now some of its functionality is also built into Apple's latest mobile operating system, iOS 5. Tweeting a photo from the default camera app is now a tap away, as is tweeting a link from Mobile Safari. Tweeting is also built into the SDK, making it available via other applications without needing separate Twitter authentication.
The hot new thing in the mobile world is Progressive Web Apps (PWAs) and it’s possible they might spell the end for the humble native mobile app. Google has just effectively green-lighted PWAs to be the future of Android. Mobile expert Henrik Joreteg over at his blog explains.