For parents wondering if it's something he's eating

Is it the food? Stop guessing, start tracking.

Snap a photo of what they ate. Tap to log a stomachache or a stool. In a few weeks, BellyMystery turns those seconds-long logs into a plain-language summary and an exportable PDF you can hand to a pediatrician, dietitian, or nutritionist.

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Launching soon on iOS and Android

Pattern found Last 30 days

Dairy

Reaction after 6 of 9 dairy meals. More often than usual.

After any meal 18%

After dairy 67%

14-day exposure

Not a diagnosis. A pattern worth discussing with a doctor.

Illustration of a parent kneeling beside their child, who is sitting on the floor holding their stomach

Before the pattern, there's just a hunch.

You've cut out the strawberries, then the dairy, then put them back. Some nights are fine. Some nights aren't, and there's no thread to pull, just a worried kid and a guess. BellyMystery doesn't diagnose anything. It remembers every meal, symptom, and stool you log, so the next flare-up has weeks of evidence behind it instead of another guess, and a report ready for whoever you see about it.

How it works

Log the moment

Snap a photo of a meal and BellyMystery reads off the ingredients for you. Tap a symptom or a stool on the Bristol scale in under 15 seconds. No typing, no forms.

Spot the pattern

A statistical engine on your phone cross-references every ingredient your child ate against every symptom and stool logged after it, no cloud database involved.

Read it in plain English

When something stands out, like reactions after 6 of the last 9 dairy meals, BellyMystery explains it in plain language. BellyMystery never diagnoses.

DONE

Bring it to the doctor

Export a PDF with the pattern summary and the full text diary (photos left out) to hand to a pediatrician, dietitian, nutritionist, or anyone else helping you figure this out.

See it in your pocket

From the first tap to the report you hand your doctor. Drag, swipe, or scroll to look through the app.

BellyMystery home screen showing three logging options: meal, toilet event, and symptom — **Pick what to log.** One tap for a meal, a stool, or a symptom.

Meal logging screen: typing 'Cheeseburger' with AI-suggested ingredients like beef, cheese, and bread shown as removable tags — **Type or photograph a meal.** AI suggests ingredients, you confirm.

Stool logging screen showing the seven-point Bristol scale as tappable illustrated tiles — **Tap a Bristol scale tile.** No scrolling, no typing.

BellyMystery diary screen listing chronological meal and stool entries with times and ingredient counts — **Every entry, chronological.** Nothing gets lost between visits.

Analysis screen reading 'Dairy exposure may correlate with reactions' with supporting counts and a plain-language explanation — **Get a plain-language pattern.** Framed for a doctor discussion, never a diagnosis.

Built for busy households

Seconds, not minutes

Meals, symptoms, and stools take seconds, not minutes, so tracking never feels like a chore.

Private by design

No account, no login. Your family's diary stays on your device. Only a meal photo and a computed summary of patterns are ever sent off device, and neither is stored afterward.

Pay once, keep it

A single one-time purchase unlocks BellyMystery for life. No subscriptions.

Your family's data stays yours.

BellyMystery works without an account. Everything you log lives on your device. We don't run analytics, ads, or trackers of any kind. Read the full details in our privacy policy.