Log the food
Type what you ate at whatever detail you feel like — "sourdough toast" on a rushed morning, or broken into wheat · starter · butter when you want to be precise. Granularity is your call, never forced.
<15s per mealA food diary for one stomach at a time
Which food is
doing this to you?
You ate something today. Hours later, your stomach turned. Why Is Pain quietly keeps the receipts — so the thing that keeps showing up before the pain has nowhere left to hide.
Lives on your phone. No account, no cloud, nobody watching.
01 — the problem
The trigger never shows up at the scene. It left four hours ago.
Food doesn't hurt you while you're eating it. It waits. By the time your stomach complains, breakfast is a blur and lunch is a guess, and "maybe it was the coffee?" is doing a lot of heavy lifting.
Memory is a terrible detective. What you actually need is a boring, honest log — every meal, every flare-up, on the same timeline — kept without effort until a pattern has no choice but to surface.
02 — the loop
Three small habits.
That's the whole app.
The rule that decided every design call: if logging a meal takes more than 15 seconds, or logging pain takes more than two taps, the app has failed. So it doesn't ask for much.
Log the pain
When it hits, tap the severity — mild, medium, or severe — and, if you can be bothered, where it lands. That's it. Two taps and you're done.
2 taps, then awayLet it connect the dots
For every flare-up, the app rewinds one to six hours and notes what you'd eaten. Do that for a couple of weeks and the same few foods start turning up again and again.
Patterns, not charts
−6h · lookback · −1h
08:10
toast
toast
10:30
coffee
coffee
12:45
lasagne
lasagne
15:00
apple
apple
16:20
medium pain
medium pain
03 — the payoff
A short list of
usual suspects.
No dashboards. No line graphs pretending to be science. Just a ranked list of the foods that keep sitting in the window before your worst days — sorted by how often, and how badly, they show up.
It surfaces associations, not verdicts. The app can point at a suspect; only you and, if you like, your doctor can decide what to do about it.
Suspect
Shows up before
01
Wheat flour · pasta · bread
02
Dairy
cheese · cream · butter
03
Onion raw · cooked
—
Coffee cleared, for now
04 — the promise
What you eat and how you feel never leaves your phone.
No account, ever
Nothing to sign up for, no email, no password to forget. Open the app and start logging.
No cloud, no sync
Every entry is stored locally on your device. There is no server to breach because there is no server.
Nobody selling it
Your gut is not a data set. No analytics, no ads, no "anonymised" anything shipped off somewhere.
05 — what it costs
Free for thirty days. Then one payment, forever.
Thirty days, everything
Nothing held back during the trial. Thirty days because patterns need a couple of weeks of logging before they mean anything — a shorter trial would expire before you had seen the thing you'd be paying for.
One payment, no subscription
Pay once and the app is yours, including every future update. No monthly fee, no ads, ever.
Your diary is never hostage
If you don't pay, the app still opens, still shows every entry you ever logged, and still exports the lot. You lose new entries and the Patterns view — never your history.
The honest pitch
It won't fix your stomach.
It'll just stop letting
the culprit get away.
Why Is Pain is a small, stubborn notebook that remembers what you can't: every meal, every ache, on one honest timeline — until the pattern is impossible to ignore.
On iPhone soon · lives entirely on your device