Your stress, on a face you’ll recognise.
HealthState reads your heart the way your body already speaks — and answers with a companion whose expression changes as your day does. Calm, tense, strained, overloaded. One glance and you know.
An app that knows your body completely — and physically cannot tell anyone. No accounts to create, no servers of ours, no analytics. Your score, your coach, your companion, your notes and your history are computed and kept on your phone.
The companion
Eleven characters, one honest signal
Your stress score drives a hand-drawn pixel companion — a copper-bobbed runner, a cat whose ears pin back, a Persian simorgh, a succulent that wilts, a small imp who cheers up when you don’t. Every expression is generated from your own numbers, not chosen from a library of moods.
You can also make the companion you: take a selfie, and an on-device analysis builds a pixel twin with your skin tone, hair and glasses. The photo is examined in memory and discarded — only the settings are kept.
New
“How long until I’m back?”
In the middle of a hard hour, the useful question isn’t how stressed you are — it’s when it ends. HealthState answers from your own history: “spikes like this clear in about 80 minutes for you — usually between 60 and 100.”
It compares like with like, because a mild spike and a full overload clear on completely different timescales, and it stays quiet until it has enough of your own episodes to say something honest. Once a relief technique has earned it, the card adds the part that matters: “a reset walk has brought it down in 60.”
New
Prove which relief actually works — on you
Every wellness app has breathing exercises. None of them can tell you whether yours work. HealthState runs a personal trial: it picks each round at random — paced breathing, a physiological sigh, grounding, a walk, and rounds where you do nothing at all — then measures what happened to your score.
Randomising is the whole point. Left to choose, you reach for different things depending on how bad you feel, and that bias is baked into any average. A winner is only ever named once one technique clearly clears the others’ margin of error — and “too close to call” is reported as the real answer it is.
Nights
It watches over the night, and wakes you gently
Start a night from your watch and HealthState stages your sleep on-device from heart rate and movement — light, deep, REM, awake. In the window before your alarm it waits for light sleep and wakes you with silent taps on your wrist. No sound, and nobody beside you wakes up.
If you’re already awake as your alarm approaches, one soft tap offers to end the night early — a double tap of your fingers takes it. That nudge is only ever sent while you’re genuinely awake, so it can’t wake you.
In the morning you get a hypnogram, how long you took to settle, and a plain-language debrief.
New
Lark or owl — and what your week costs you
From your own sleep timing, HealthState works out where your body clock actually sits, then measures the gap between that and the week you keep. An hour of it is roughly a time zone you fly across twice a week without leaving home.
If you’re an owl keeping office hours, early mornings genuinely cost you more than they cost other people. That’s physiology, and it’s worth seeing written down.
New
Notes — written by you, not by the app
Everything else here infers, scores, or writes something for you. Notes deliberately doesn’t. It’s a plain notebook for what you already know about your own health: how to live healthier, foods to avoid, what helps, what sets you off, and questions for your doctor.
Nothing in it is generated, and nothing reads it. The coach, your companion and the Chronicle are all built without access to your notes — that isn’t a promise in the marketing, it’s enforced in the code.
Pin a note and it appears on a widget or your Lock Screen, with an optional daily reminder in your own words. Ask Siri to “add a note to HealthState” and it’s captured without opening the app. Notes written for your doctor print on the report you can hand over at an appointment.
Apple Intelligence, on your phone
Ask a companion that knows your body
Ask “why am I wired?” or “how did I sleep?” and get an answer grounded in your real numbers — your HRV against your own baseline, last night’s stages, the hours you tend to spike. Written by Apple’s on-device model, so the conversation never leaves your phone.
Each week your coach writes you a letter, and every month the Chronicle turns your numbers into a chapter you can actually read back.
Receipts
What actually moves your stress
Not horoscopes — receipts. HealthState splits your days and compares: daylight, steps, noise, and if you already log them anywhere, caffeine, water and alcohol. Findings appear only when there’s enough on both sides to mean something.
The alcohol one is the receipt people screenshot. Compare the nights after a drink with the nights after none, and you get your own numbers: HRV down, deep sleep down, resting heart rate up. HealthState never asks you to log a drink — it only reads what’s already there, and it reports what happened without a word of advice.
On your wrist, all day
The face lives on your watch as a complication, tracks a hard moment second by second, and paces your breathing with taps.
Built for everyone
A face you don’t have to see
The companion is an abstraction over a number, which means it doesn’t have to be looked at. Every state has its own rhythm of taps on your wrist — one soft tap for calm, four sharp ones for overload — so you can feel where you are without lifting your arm.
The face is fully described to VoiceOver, and can be read aloud on request. Reduce Motion holds a still expression, and each state carries a distinct shape so colour is never the only thing telling you something. The whole app is available in English and Persian, with full right-to-left layout.
Pay once. That’s it.
Health apps that charge monthly have to keep you anxious. This one doesn’t.
Free, forever
- Your live score and companion
- Today’s timeline and stress alerts
- Breathing and the relief toolkit
- Notes, with widgets and reminders
- Seven days of history
- Full data export — always
HealthState Pro · $24.99 once
- Companion chat and weekly coach letters
- Personal trials — what works on you
- Recovery forecast and energy curve
- Nights, smart wake-up and night replay
- Baseline Guard and Recovery 2.0
- Receipts, body clock, places
- The Chronicle, yearly recap, clinician report
- All companions and alternate icons
- Unlimited history — and every future Pro feature
No subscription, no ads, no accounts, no analytics. An optional tip jar exists for people who want to leave something for their companion — it unlocks nothing.
Why on-device matters
Nothing to breach
There is no HealthState server holding your heart data, because there is no HealthState server. Nobody can hand over, sell, or lose what was never collected.
No account, ever
No email, no password, no sign-in. Turn on sync and your history moves through your own private iCloud — readable by you and nobody else, including the developer.
Yours to take
Export everything — readings, moods, notes — as CSV or a JSON backup, any time. Leaving is as easy as arriving, which is how it should be.
Wellness, not diagnosis
HealthState estimates stress from heart-rate variability and heart rate. It is a wellness app — not a medical device, and not a substitute for clinical advice. If something about your health worries you, speak to a doctor.