Fodmi vs mySymptoms

mySymptoms is a detailed diary for food, symptoms and lifestyle that is used for IBS and many other conditions. Fodmi is a diary built around the low FODMAP diet: it reads your meal from a photo and shows its FODMAPs across the six groups, then checks in on how it sat. If your doctor wants a broad record with a clinic portal, mySymptoms fits. If you want the FODMAP content of each meal worked out for you, Fodmi does that.

We make Fodmi, so take our view with that in mind. Everything below about mySymptoms comes from its US App Store listing, which we read on 22 October 2026. Listings and prices change; check the current one before you decide.

Side by side

	Fodmi	mySymptoms
Best for	Logging meals and seeing their FODMAPs	A broad food, symptom and lifestyle diary
Logging a meal	Photo, voice or text	Search or scan barcodes in its food database; its listing doesn’t mention photo logging
FODMAP content of a meal	Shown across the six groups with a traffic light	Its listing mentions the low FODMAP diet as a use, but not FODMAP ratings for foods
Also logs	After-meal check-ins with the Bristol stool scale	Drink, medication, stress, exercise, energy, sleep and bowel movements (Bristol scale)
Finding triggers	Weekly trends of how meals sat	Correlation analysis, reports with histograms and trend charts
For your doctor	PDF report	PDF or CSV export, or sharing through its Clinic web app
Devices	iPhone	iPhone and iPad
Price	Free download, full access by subscription	Free, with subscriptions (listing shows $9.99 a month, $39.99 for 6 months, $59.99 a year) and a 7-day free trial

What mySymptoms does

mySymptoms is a general-purpose diary. Its listing says you can log food, drink, medication, stress and exercise, track energy, sleep and bowel movements, and add your own foods, medications and symptoms. It lists IBS, IBD and the low FODMAP diet among the things people use it for. The app then looks for correlations to point at possible triggers and builds reports with histograms and trend charts. You can export your diary as PDF or CSV, or share it with a clinician through its Clinic web app.

It is thorough, and it is built for people who will log carefully over time. Its listing doesn’t mention photo logging or showing a meal’s FODMAPs, so on a low FODMAP diet you would work out the FODMAP content yourself, with a food guide.

What Fodmi does

Fodmi starts from the meal on your plate. Take a photo, say what you ate, or type it. Fodmi picks out the ingredients, including hidden garlic and onion, and shows the meal across the six FODMAP groups. A few hours later it asks how the meal sat, so over a few weeks you can see which foods line up with bad days. You can also look up more than 900 foods with the amount where each stays low (see the food list).

It also scans packaged food: scan the barcode, or photograph the label if the barcode isn’t found, and Fodmi rates each ingredient and tells you whether the amount you’ll eat is low.

What it doesn’t do: it doesn’t track stress, sleep or exercise, and it’s iPhone only. How Fodmi works out its answers.

Which should you pick?

• Want the FODMAP content of each meal without looking everything up? Fodmi.
• Want to log lots of other things as well, such as stress, sleep and medication? mySymptoms.
• Your clinician asked for a detailed diary or a portal? mySymptoms, or Fodmi’s PDF report if a simple summary is enough.
• Logging feels like a chore? A photo takes seconds; typing a full diary entry takes longer. Whichever is easier to keep up is the one that will give you useful patterns.

For how both compare with other apps, see the best low FODMAP apps for iPhone and alternatives to mySymptoms. Whichever you use, the diet works best as a short trial followed by reintroduction, ideally with a dietitian. Our guide to the low FODMAP diet explains the three phases.