A little more than a month after its open beta period, Microsoft’s Cortana personal assistant hit the App Store today. The free app allows users access to functions similar to those performed by Apple’s Siri, like getting answers to questions, but adds the ability to sync reminders between an iOS device and a Windows PC. Cortana is also able to track packages, flights, sports scores and stocks for those looking for up-to-the-minute updates, and a Notebook function stores information about a user’s interests and activities. But Cortana’s functionality is much more limited on the iPhone than on Windows phones where it’s fully integrated: Cortana isn’t allowed to change iPhone settings or activate when users say “Hey Cortana,” making the app less of a full replacement for Siri and more of a handy extension for iOS device users operating a Windows PC that they want to integrate with their device.