Apple has announced new software and privacy toolsas it seeks to expand service offeringsto its estimated 1.4 billion device users.The announcements came during Apple'sWorldwide Developers Conferencehappening this week in San Jose, California.The changes are another clear sign of Apple's attemptsto expand its offerings to make upfor dropping iPhone demand worldwide.iPhone sales fell sharply during the past two financial quarters.For iPhone users, Apple announcedthe launch of its iOS 13 operating system, to be available this fall.The new version comes with several new features.One is a setting for the iPhone called "dark mode."The feature – already available on Mac computers– turns the background of the device black.Apple says dark mode is designedto make everything on the screen easier on the eyes.It can be used all the time or set to come on at a specific time.iOS 13 also offers iPhone users a way to avoidusing sign in services of Facebook and Google when using apps.Instead, users can sign in with their Apple ID.Apple says the feature aims to respect the privacy of usersby not collecting tracking information through the apps or services.Facebook and Google collect such user informationfor its advertising business.In addition, iOS 13 includes a redesigned Maps appthat provides "more detail about the world around you."It has a feature that lets users look at actual street photosand move through streets within the app.The feature is very similar to Google's Street View,which has been available for years.The new iPhone OS also adds improvementsto Apple's Siri personal assistant system.The company says the new Siri has a more natural voiceand will work with map and music apps.Apple announced the iPad will get its own operating systemto replace the existing one made for iPhones.The new OS is designed to make it easier for iPad usersto use the device to do more of the things a laptop computer can do.Apple also introduced several new apps for its Apple Watch deviceto be included with the new WatchOS 6 system.Among these are apps that operate independentlywithout the need to be linked to a user's iPhone.The smartwatch's Health app is also adding new featuresto record more exercise information, monitor safe hearing levelsand track women's menstrual cycles.In addition, the App Store will now be available on Apple Watch,making it possible for people to findand download apps directly to the device.In its laptop and desktop businesses, Apple announced it is breaking upits long-time digital music software iTunes.Later this year, the software will be split into three apps:Apple Music, Apple Podcasts and Apple TV.Apple has already reduced the importance of iTunes on the iPhone and iPadand will now do the same on Mac computers too.iTunes will still be available on Macs using older OS versions,as well as on machines running Microsoft's Windows system.Apple also used its developer's conference to show offa new Mac Pro high-performance desktop computer to go on sale this fall.The machine, which Apple describes as "extreme in every way,"is designed for professional users.Pricing for the low-end model Mac Pro starts at $5,999.