Food Trial Log Français

Find the food that upsets your digestive system.

Less cramping. More energy.

Open the app Install on your phone

Free. No account, no ads. Your log stays on your phone.

The app’s starting list: white rice, potato, chicken, egg and beef
Step 1: your starting list of plain foods.

How it works

A test, not a diet.

  • Eat a few simple, single-ingredient foods and log your daily symptoms.
  • When your gut settles, add foods back, one a day.
  • A food that brings symptoms back is a confirmed trigger.
  • The timeline depends entirely on how many foods you want in your diet.

Listen to the signals.

  • Loose stool, gas, or cramps after eating are direct signals from your gut.
  • It is not normal, and you should not get used to it.
  • Log every single occurrence.

You control the variables.

  • Spices, oils, sauces, and cooking methods all change how your gut reacts.
  • Eliminating those variables is your job.
  • Buy the same ingredients and cook them the exact same plain way every time.

It takes effort.

  • Eating the same plain food every day is hard.
  • This app is a helper, not a shortcut.
  • If plain food doesn’t calm your gut, the app stops and tells you to see a doctor.

What you do each day

  • Stool report
  • Meal or drink
  • Symptom report

Three buttons: Stool report, Meal or drink, Symptom report. The app tells you what to eat today, when to add a food, and which food to take off your list. It keeps a calendar of good and bad days, shows which nutrients your list is low in, and writes a summary you can show a doctor or a pharmacist.

The app’s daily screen with three buttons: Stool report, Meal or drink, Symptom report
The daily screen.

Is there research behind this?

  • In a Swedish study of people with irritable bowel, 84 in 100 said at least one food set off their symptoms. Böhn and others, 2013.
  • In a 2024 trial of 294 people, changing the diet helped 7 to 8 people in 10. Medicine helped about 6 in 10. Nybacka and others, 2024.
  • The British gut doctors’ guideline says diet advice comes first. British Society of Gastroenterology, 2021.
  • The best-studied gut diet works the way this app does: cut foods, then add them back to find your own triggers.

Before you start

Blood in your stool, black stool, fainting, chest pain or trouble breathing: get care now. The app has a Something’s wrong button on every screen.

Loose stools for weeks? Ask your doctor for a celiac blood test before you start. It only works while you still eat wheat, and the starting list has none.

This is a log, not medical or dietitian advice, and you decide what to do with it. It is for adults. If you are pregnant, breastfeeding, or living with Crohn’s, colitis, celiac disease or an eating disorder, talk to your doctor or a dietitian before cutting foods.

Install it on your phone

The app gets its own icon on your phone and opens without a connection. There is no store and no account.

The quick way: open the app and tap Install Food Trial Log on the first screen, or Install on the black bar at the bottom. If neither is there, follow the steps for your phone.

iPhone

  1. Open the app in Safari.
  2. Tap ⋯ beside the address bar, then Share. No ⋯? Tap the Share button.
  3. Scroll down the list and tap Add to Home Screen.
  4. Tap Add.

On an iPhone, install before you start. The installed app does not see the reports made in Safari.

Android

  1. Open the app in Chrome.
  2. Tap the ⋮ menu at the top right.
  3. Tap Add to Home screen. On some phones it says Install app.
  4. Tap Install.

From then on, open the app from its icon. Your log lives on your phone only, so back it up from the app’s menu. The English and French versions are two separate apps, each with its own log.