Once a feature unique to Windows, Cortana is now just another one of Microsoft's many cross-platform tools. After releasing a public beta of its digital assistant on Android earlier this year, the company is now preparing a similar release on iOS.

Microsoft is now accepting sign-ups for those wishing to try out Cortana on iOS. In a post on its Community site, it said that it's "looking for a limited number of people to get their hands on an early version of the app".

However, it also points out that Cortana will always be best on Windows:

Cortana's deep integration with Windows means that’s where she can really shine. So, while there are some features you'll use on Windows that we don't (yet) support on iOS phones (like saying "Hey Cortana" to wake her up), we’ve focused on making Cortana on iOS the perfect companion to your Windows experience.

For now, sign-ups are restricted to those in the United States and China, and those in the US wishing to register will need to complete a short survey. Microsoft says the first users will get access to Cortana on iOS "in the coming weeks."

Source: Microsoft Community | Thanks for the tip, JP!