Slowpulse, a stress score that shows its arithmetic

Why it surfaced

Slowpulse explains its scoring instead of hiding behind a single wellness number: users can see how heart rate, variability, exercise, and stale readings contributed. It also makes a concrete privacy promise—no account, server, analytics, or network requests beyond Apple’s payment system—and invites users to test that claim in Airplane Mode.

An iPhone and Apple Watch app that compares heart rate and HRV with your personal baseline, then guides a wrist-based 4-7-8 breathing cycle.