Fast FODMAP vs Gutli: lookup app or journal?

What Fast FODMAP is built to do

Fast FODMAP Lookup & Learn comes from Recovery Record, and its listing describes it as the fastest way to look up whether a food is high, low or medium FODMAP. The search shows results as you type, which the listing calls incremental searching, and it works offline for search. The listing claims an eightfold reduction in time to find a food's FODMAP level compared with the Monash app, based on the developer's own studies.

It also teaches. Learning games use spaced repetition to help you remember which foods fall where, so you look things up less often over time. The listing adds a weekly meal planner and a diary, and says you can link with your dietitian for personalized feedback.

As listed on October 1, 2026, it is free, rated 4.7 from 21,311 ratings, and was last updated on March 23, 2026.

What Gutli is built to do

Gutli is a meal, symptom and low FODMAP protocol journal for iPhone. A meal takes a time, ingredients, grams, notes and an optional photo, with a low, moderate or high portion reference. A check-in records pain, bloating, nausea, energy and bowel movements using the Bristol Stool Chart.

Meals and symptoms sit on one timeline and a calendar, so you can look back and see what came before a bad afternoon. Elimination, reintroduction and maintenance are separate phases, and you decide when to move between them. Patterns appear with their confidence shown, and Gutli records and shows patterns without diagnosing anything.

Lookup is a quick question, logging is a habit

The difference between these apps is the difference between two kinds of use. A lookup happens at the shelf or the menu and takes seconds: what is this, and is it fine. A log happens every day for weeks, and its value comes from being complete enough to compare.

Fast FODMAP puts its effort into the first. Its listing says that cutting friction in lookups leads to more lookups and better food choices. Gutli puts its effort into the second, so a meal and a check-in take a few taps and the record is there when you need it.

Both have a diary, so there is overlap. What differs is the weight each gives it: the Fast FODMAP listing describes its diary in one line, while Gutli's whole structure is the journal.

Reintroduction, dietitians and reports

Reintroduction is where a plain diary gets hard to manage. You test one FODMAP group at a time, in a dose, for a set time, and note the response. Gutli has a place for each of those: food, dose, duration and response for every group. Fast FODMAP's listing does not describe guided reintroduction.

Where Fast FODMAP is clearly stronger is the link with a dietitian. Its listing says you can link with yours for personalized feedback, and it may ask for step count data through Apple Health if your dietitian requests it or you choose to enable it. Gutli does not describe a dietitian link. It produces a PDF or CSV report, with weekly and monthly summaries, that you can hand to a clinician at your appointment.

Gutli keeps meals and symptoms on your iPhone and never sends them to iCloud. An exported backup moves them to a new phone.

How to choose

If you are early in the diet and mostly need to know what a food scores, start with Fast FODMAP. It is free, its listing says search works offline, and the learning games help the answers stick. If your dietitian uses the app, that link may decide it for you.

If you are starting elimination, or partway through reintroduction and losing track of which group you tested, a journal built around the protocol will serve you better. Using both is a reasonable setup: a reference for the quick question and a journal for the daily record. An app can show patterns, but decisions about your diet belong with a clinician or dietitian.