Twitter for iOS updated to v4.1 Twitter has released an update to its official iOS app, taking it to version 4.1. The update brings a number of useful updates. I am @icraigt on Twitter. By icraigt Craig Thornton (@icraigt), Geek Dad, husband of @linsthornton, Principal Engineer at JLR, tech addict. All views my own. View all of icraigt's posts.