questions.
what is sate?
one app for sleep, recovery, nutrition, and movement — resolved into a single daily number, the sate score. less to read, more to act on.
do i need to buy a wearable?
no — there is nothing to buy, nothing extra to charge, and no second subscription. sate reads apple health and the apple watch you may already own; no band, ring or chest strap of ours exists. if you do own a chest strap or power meter, it reads those during workouts too. what a watch changes is answered below.
how is this different from whoop or oura?
they score your night; sate scores your day. recovery scores read sleep and autonomic signals and stop there — they have no idea whether you ate 1,200 calories or 4,000, and food is the input you actually control. sate reads the same overnight signals and your meals, and resolves both into one number. it also needs no extra hardware and no second subscription.
how is this different from myfitnesspal or cronometer?
those are food diaries — they tell you what you ate, not what to do about it. sate reads your meals alongside your sleep, training and autonomic signals, so nutrition is scored in the context of the body eating it. micronutrients and barcode scanning are included rather than sold as a premium tier.
how does sate calculate the score?
each of the five pillars is scored 0–100 against your own recent baseline, then combined at a fixed share: recovery 30%, nutrition 20%, activity 20%, stress 20%, habits 10%. the shares are published, they never move, and they never renormalize — a pillar with no data contributes a neutral 50 rather than quietly handing its weight to the others. the full method is on the science page, and you can play with the arithmetic on the homepage.
why did my score change when i didn't do anything differently?
because it's scored against a moving baseline of your own recent history. if your last two weeks were unusually good, an ordinary day scores lower than it would have a month ago — the number is relative to you, not to a fixed table. big unexplained jumps usually mean a pillar gained or lost data that day.
what data does sate use?
only what you allow. the healthkit metrics you grant — sleep, heart rate, hrv, workouts, weight — plus what you log: meals, hydration, habits. it stays on your device until you turn on sync; once synced, those metrics are stored on our servers, included in your data export, and deleted when you delete your account.
is my data private?
healthkit-native. sync to our servers is opt-in — never sold, never shared. see the privacy policy for detail.
does it work offline?
yes. you can log a full day in airplane mode — meals, water, workouts, habits — and it syncs when you're back, without creating duplicates. this isn't a degraded mode; writes queue locally and reconcile on reconnect.
can i bring my history from another app?
strong, hevy and plain csv import directly. anything already in apple health — workouts, sleep, weight, dietary entries — is read on first launch, whichever app put it there.
how accurate is logging a meal from a photo?
good enough to be useful, and honest about where it isn't. identification is reliable for ordinary meals; portion size is the least certain part, which is why the app shows alternatives and lets you correct rather than presenting one number as fact. barcode scanning is exact where a barcode exists.
does sate write back to apple health?
yes — nutrition, water, workouts and weight go back into health, so the rest of your apps keep working. sync is opt-in, exportable and deletable at any time.
can i cancel? what happens to my data?
cancel any time in your apple account settings; there's nothing to phone or email. your data stays exportable and deletable whether or not you're a member — deleting your account removes it, and we don't keep a shadow copy.
does it work without logging every meal?
yes, but it will tell you it's working with less. nutrition scores what you logged, so a half-logged day reads as a thin day. the other four pillars are unaffected — recovery, activity, stress and habits don't depend on your food logs at all.
how much does it cost?
seven days free — no card, no subscription — then one membership: $9.99 a month or $79.99 a year. no tiers, no locked features.
what happens on day seven?
sate locks until you join. you're not charged automatically, because there's no subscription running during the trial — nothing renews, and there's nothing to cancel. on day seven you choose. your data stays yours either way: it's still exportable and still deletable if you decide not to.
do i need an apple watch?
no, but it changes what you get. an iphone alone covers nutrition, hydration, habits, activity and steps. recovery and stress are read from heart-rate variability, resting heart rate and respiration — signals a watch collects overnight. without one, those two pillars have no data and each contributes a neutral 50 to your score. you'll still get a number; it just knows less about you.
which iphones does it run on?
iphone on ios 18.5 or later. there's no ipad build and no android version — and none is planned right now. the app is in english and russian.
is sate a medical device?
no. sate informs; it doesn't diagnose, treat or prevent anything, and nothing in it is medical advice. it computes from apple health data and published physiology — the papers are cited on the science page — but a score is not a diagnosis, and a doctor is not something an app replaces.
one honest number, every morning.
sate reads what your iphone and apple watch already collect, and what you log in seconds, and answers with a single score you can act on.
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