Apple's Innovative Subscription Naming Strategy
According to recent insights from tech analyst Mark Gurman, Apple has a clear naming convention for its subscription services. The "plus" suffix is exclusively reserved for premium paid services that complement a free, pre-installed counterpart.
Anticipating the Launch of Health+ Subscription

Speculations suggest that Apple's next 'plus' subscription offering could be Health+. The potential service is expected to leverage advanced technologies, including AI, to provide users with enhanced health and wellness features.