Calmline Go to Slowpulse

Calmline is now Slowpulse

Slowpulse has acquired Calmline. What Calmline did — a stress score read against your own baseline rather than a population average — now ships inside Slowpulse, on iPhone and Apple Watch. Everything it did best came with it.

  • The card that knows when to speak. It lifts itself to the top of the Smart Stack only when you are actually elevated.
  • Breathing you feel rather than watch. Paced by haptics on the wrist, with your arm down.
  • Recovery that counts. Sessions land in the Workout app and go toward your rings.
  • Your readings, in a file you own. CSV or JSON, units named, readable without the app.
Slowpulse on an iPhone held in one hand: a stress score of 50 over a dawn sky, marked elevated against a normal range of 56 to 60.