Microsoft revealed last year that it was planning to merge its Outlook and Sunrise apps into a single app. After acquiring Sunrise more than a year ago, Microsoft is now planning to kill off the standalone app at the end of August. Sunrise will be removed from the App Store in the "next few days," and it will stop working altogether on August 31st. "As heartbreaking as this sounds, we're hard at work bringing the magic of Sunrise to the Outlook apps," reads a message from the Sunrise team at Microsoft. "The entire Sunrise team is now working side-by-side with the Outlook team and it's a thrilling moment for us to work on an app of this scale."

Microsoft has been gradually improving the calendar that's built into its Outlook iOS and Android apps. Just last month, Microsoft added Facebook, Evernote, and Wunderlist integration, and the Sunrise team helped add these into Outlook. Additional calendar apps are expected soon, including Skype for Business and OneNote integration. Sunrise still includes support for a lot of other calendar services that aren't yet integrated into the Outlook app, and current users will be hoping that Microsoft plans to add these in the coming months.