Steady: Stress & HRV Tracker

Steady is an iPhone app that turns what your Apple Watch already records into a stress score you can act on. It reads the still moments in your day — your heart rate, and the beat-to-beat timing when your Watch catches it — and compares them with your own usual for that time of day, not with anyone else’s.

It marks the stretches of the day when stress ran high, with their clock times. Inside hours you choose, it can alert you when a stretch is running above your usual and offer a short breathing reset. Worn to bed, your Watch also gives Steady a recovery score each morning. A Method page in the app shows what is measured, what is thrown away, and the limits of what a wrist sensor can tell you.

Your health data is read on your iPhone and stays there. There is no account, no sign-up and no server of ours holding your readings. You can export everything or delete everything from Settings.

Steady needs an iPhone with iOS 18 or later and an Apple Watch. It is a subscription app: after setup, a subscription or a one-time lifetime purchase is needed to use it.

Steady is a general wellness app. It does not diagnose, treat or prevent anything, it is not a medical device, and it is not a substitute for professional care. If something about your health worries you, talk to a health professional.