Which watchOS does Phaze on Apple Watch need?

Phaze on Apple Watch supports watchOS 10 or later, paired with an iPhone running iOS 17 or later. That baseline is what enables the modern SwiftUI, HealthKit, complications, widgets, and Live Activities the experience relies on. If your Apple Watch is on an older version, the watch app may not appear, but you will still have the full Phaze iPhone app. Most Apple Watch Series 5 and later models can run watchOS 10. To update, open the Watch app on iPhone, go to General, then Software Update; once your watchOS is current, Phaze for Apple Watch installs over the air automatically.