Ebb Life
iPhone · private · on-device
As healthy as possible while still living a little.
iPhone · in testing
As healthy as possible while still living a little.
iPhone · in testing
Drag a slider — the words are your own.
Go on — move them. Four numbers a night, about forty seconds; everything else it reads on its own.
The whole idea
A mirror, not a coach.
Most health apps grade you. Ebb Life just reflects. You rate four parts of your day, it reads sleep and movement and heart rate from Apple Health, and it holds the two up side by side. No streaks, no goals, nothing to break. A day with three bourbons and four hours of sleep is data, not a failure — and a bad week is never something the app makes you feel.
The four
Four scores, every night. The last two are first-class here, not an afterthought — because they travel with sleep, drink, stress and movement as much as anything, and almost nothing measures them. Each domain has its own colour at the same weight as the others, so a low score looks exactly like a high one. Only the length changes.
Energy, vitality, soreness.
Clarity, mood, focus.
Desire and function, regardless of activity.
Closeness and connection.
How it works
Four 1–10 sliders, in your own words — you write what each number means during setup, so a 7 means the same thing every night.
Sleep, steps, workouts, resting heart rate, HRV, weight — read only. Drinks you log write back to Health (water, caffeine, alcohol) so you don't need a second app. Food is a few taps.
Once there's enough to be sure, it starts naming the patterns — the honest ones, with the numbers behind them.
The payoff
After a few weeks Ebb Life starts telling you which of your own inputs move which scores — in plain language, ranked by how sure it is, with the working shown. It only speaks when the maths clears a conservative bar, it says "not enough for that yet" rather than inventing something, and it never claims cause. The cost of a wrong pattern is trust.
Alcohol the night before is your strongest negative signal — across all four domains.
High confidence112 paired daysDrinks
Build a shelf of what you actually drink — your coffee, your pour, your usual glass of water — each at its real size. Logging is one tap, or a long-press to change the size or count; nothing is ever typed. Alcohol shows the standard-drink maths (ml × ABV × 0.789 ⁄ 14), caffeine scales with the cup, and water reads against your own typical day, never a target. The drinks you log write straight to Apple Health — water, caffeine, alcohol — so Ebb replaces the second app you were using for it, and still makes no network calls of its own.
On your Home & Lock Screen
Pin two or three favorites and they show up as one-tap buttons in a widget and in the app icon's long-press menu. Tap once — it's logged and written to Health, no launch. This is where the water actually gets logged.
The rest of it
An optional, more personal log kept in a separate encrypted store with its own key and a second Face ID gate. Leave it closed forever and nothing else misses it.
On a supported iPhone, ask a plain question and get an answer written by Apple's on-device model — from your own numbers, never sent anywhere.
It finds where a relationship actually flips — two drinks, not one; caffeine after 2pm — and lags it to the right day, instead of implying less is always better.
Private by design
No account, no sync, no analytics — and no networking code at all. Health data is read; the only thing written back is a drink you log. Nothing is ever sent off the phone. It's encrypted at rest and opens with Face ID, and the most personal part — a private log with its own gate and its own key — can be left closed forever without the rest of the app missing it.
On-device intelligence, when your iPhone supports it: the questions you ask and the weekly note are written by Apple's on-device model, offline. Not medical advice — a mirror, kept to itself.
When it's ready
Ebb Life is in testing now. Leave your email and I'll let you know when it's out — and whether you'd like to help test it first.
✓ You're on the list — one note when it ships, nothing in between.
one note per launch · no tracking · leave any time