An anonymous reader writes: While many big tech companies have their own personal assistant software these days, few of them are available on a broad variety of devices. Microsoft has now announced that it's becoming one of those few: Cortana will be available for iOS and Android devices later this year. It's part of an initiative by the company to ensure Windows 10 plays well with all sorts of devices, even phones made by the other major manufacturers. Microsoft said, "Regardless of the operating systems you choose across your devices – everything important to you should roam across the products you already own – including your phone." This led them to develop a "Phone Companion app," built into Windows 10, that's designed to help sync a user's PC with his phone.