The self-titled "HTC Vive" software allows users to tap into some of the Vive's more unique communications features, receiving calls, texts, and calendar reminders, all without leaving the comfort of your own little virtual world. Android users have been privy to these features since the Vive was released in early April, and HTC's flagship VR product remains the only headset that offers these useful tools in the first place.
However, the iOS app itself was pushed live without every single feature its Android iteration offers. For instance, the ability to send preset responses to calls or texts is absent from the iOS release. It's useful for iOS owners and is available now, but hopefully the app will be updated in the future to match the capabilities of its Android counterpart.