Now on the App Store · iPhone

Track your gut.
Trust your gut.

The fastest, most private way to find your food triggers — and walk into your GI appointment with data your doctor can actually use.

Free to use. No account. No ads. Your data stays on your phone.

TummyTrail home timeline showing a day of logged meals, symptoms, and bowel movements
TummyTrail app icon

Built for people who are done guessing

Three things every gut diary should get right — and most don't.

TummyTrail quick-log sheet for a meal

Log in 3 taps

A flare-up day is the worst day to fight a clunky app. Log a meal, symptom, or bowel movement in three taps and under ten seconds — with favorites, retroactive logging, and drafts that never lose your entry mid-type.

TummyTrail reminders and privacy settings

Your data stays on your phone

No account. No cloud. No server that could leak, sell, or subpoena your health history — we never have it. Delete the app and it's gone. That's privacy by architecture, not by promise.

TummyTrail Insights charts and Doctor Report

Export everything, free

Your data is yours. Every entry you've ever logged exports to CSV, free, forever. Upgrade to Insights and get the Doctor Report — a clean PDF summary built for a 10-minute GI appointment.

TummyTrail suspect foods ranked by how often they preceded symptoms

From daily logs to a real conversation

1

Log as you live

Meals, symptoms with severity, Bristol-scale bowel movements, meds, stress, sleep — each in seconds. Sick day? Flag it, and it's excluded from your analysis.

2

Watch patterns emerge

After 14 days of logging, TummyTrail Insights shows which foods most often preceded your symptoms across adjustable time windows — patterns worth discussing, never diagnoses.

3

Bring real data to your doctor

Generate the Doctor Report PDF: symptom frequency, Bristol distribution, suspect foods, and your med log — instead of "I think maybe dairy?"

Private by architecture, not by promise.

Most health apps promise privacy in a policy. TummyTrail delivers it in the design: everything you log is stored only on your device. There's no sign-up, no sync, no analytics trackers — the only network connection in the app is the one that processes an optional subscription.

Your symptom history physically cannot be breached, sold, or handed over by us. We never have it.

Read the privacy policy →

Free to use. Fair to upgrade.

Free forever

Everything you need to start
  • Unlimited logging
  • Last 30 days of history
  • Streaks
  • All-time CSV export
Insights

TummyTrail Insights

Understand your patterns
  • Trigger analysis with time windows
  • Doctor Report PDF
  • Full history
  • Full charts
  • Custom reminders

$4.99/month · $29.99/year with 7-day free trial · $79.99 lifetime

Because there are no ads, free users are never nagged mid-log.

Questions, answered

Is TummyTrail a medical app?
No. TummyTrail is a personal wellness journal, not a medical device — it doesn't diagnose, treat, or give medical advice. It helps you record patterns to discuss with your healthcare provider.
Does it work for IBS, IBD, reflux, or food intolerances?
TummyTrail is built for anyone tracking gut symptoms against food and lifestyle — IBS, IBD, GERD/reflux, elimination and low-FODMAP diets, or unexplained stomach trouble.
What is the Bristol Stool Chart?
A widely used 1–7 scale describing stool form. TummyTrail includes an illustrated Bristol picker so logging is one tap — and your Doctor Report includes your Bristol distribution.
Where is my data stored?
On your phone, in the app's local database. There is no account and no cloud copy. Deleting the app (or using Settings → Delete All Data) permanently erases it.
Is there an Android version?
It's on the way.