This feature copies other messaging services such as WhatsApp and Snapchat.</p><p>Although HomeKit and HealthKit are tailored for iPhones and iPads, they eventually may work on Macs too.</p><p>he is because Apple is reprogramming its operating systems so it is easier for users to hopscotch from an iPhone to an iPad to a Mac and keep working on a document or Web page opened on another Apple device.