A stress tracker for iPhone
EVEN
Even learns which small things work for you, then shows you they did.
For iPhone, iOS 18 or later. Your score is free.
Five words for how a day went, and one number behind them.
Every morning
Your Even score runs from zero to a hundred, and higher is lighter. It is read from the night you just had and the days behind it, against your own usual rather than a population average, so a good score means good for you.
Under it there is one sentence, in plain words, about what today can hold. Not nine dials and a wall of charts to interpret before breakfast. Tap the number and it opens into everything it was made of.
What the score is made of
Each part is a published instrument or a real population anchor, and each is read against your own history. If a part cannot yet be read honestly, Even says so and leaves it out rather than filling the gap with an estimate.
How the nights went: length against the sleep you aim for, how broken, how late, and how steady one night is against the next.
Sleep, wrist temperatureWhat your body did at rest. Heart rate variability, resting heart rate and breathing rate, each against your own baseline.
HRV, resting HR, respiratory rateHow hard the day itself was. Four quick sliders at check-in, adapted from the workload instrument NASA has used since 1988.
NASA Task Load IndexHow it landed, in your own words. Logged on Apple's State of Mind model, so it reads and writes to Health both ways.
Apple State of MindWhat you asked of your body and what it gave back. Steps, energy, exercise minutes and time in daylight.
Activity, daylight
Day one
Most trackers begin counting the day you install them and ask you to wait a month before they say anything useful. Yours has been counting for years, and Even opens by reading ninety days of it back to you.
The month your nights settled. The week your resting heart rate came back down. Which day of the week takes the most out of you, every week. It is your own record, so it is worth trusting, and it means the app is useful the first evening rather than in October.
The loop
A recovery score that tells you your HRV dropped and then leaves you holding it has done the easy half. Even closes the circle: it reads you, offers something small, measures what the something did, and gets better at choosing next time.
One score in the morning, with one line about what it means for today.
Three things worth doing, chosen for your state, the hour, and the shape of your week.
Two minutes to twenty, inside the app, so the measurement survives.
Your heart settled nine beats in six minutes. One tap for how it felt. Proof, in your own numbers.
What helps you moves up the list. What does not moves down. In a month the app is measurably better at you.
The sessions
Two minutes to twenty. Every session has a published reason to exist and leaves a reading behind, and every one lands back in Apple Health as mindful minutes. Nothing here asks for thirty days of discipline.
The library
Two minutes to twenty. Every one has a published reason to exist.
The measured walk
Guided stretching
Guided writing
While it plays
What works for you
Breathing settled your heart after five sessions out of five. The walk after two out of two. That is your record, and it is what lets Even stop guessing and start choosing.
Even ranks rather than scores, because at this sample size saying which helped most is honest and saying how much would not be. When it does not know yet, it says how close it is instead of inventing a percentage.
Ten seconds, twice a day at most
Slide to the mark that fits, and stop there if you like. A word for it and what it was about are optional, and so are the four sliders for how hard the day was.
Even is built so it can never make you feel bad for not opening it. There are no streaks to break and no red badges. What you tell it goes straight into the part of the score it cannot measure from a wrist, and into learning which sessions land for you.
Grounded in published work
Even is designed on peer-reviewed research, and the app carries the full list, with journals, years and DOIs, one tap from anywhere it makes a claim. If a number cannot be computed from your own data, Even says so instead of estimating it.
Harvard Universityhow Even learns what works for you
University of Michiganthe right help at the right moment, and the walk
University of Pennsylvaniawhy short sleep shows up as attention first
Boston Universitypaced breathing
World Health Organizationthe well-being check
NASAthe daily day rating
What leaves the phone
Even keeps learning you across the iPhones you sign in on, so it needs an account, and it says exactly what that account holds. No advertising, no tracking, and nothing sold or shared for anyone else's purposes.
Deleting your account removes the account, everything synced under it, and everything on the phone. Read the full privacy policy.
Start with the ninety days you already have
For iPhone, iOS 18 or later. Better with an Apple Watch, and it works without one.
Even describes patterns in your own data. It is not a medical device, it does not diagnose or treat anything, and nothing in it is medical advice. If something you see worries you, talk to a clinician.