
iPhone appHealthIn development
Gutli
Find the foods that agree with you.
A meal, symptom and low-FODMAP protocol journal for iPhone: log meals and check-ins, follow elimination and reintroduction, and bring a clear report to your clinician.
Noted. Every tap tells us how many people want Gutli on Android.


What it does
Records and patterns, not a diagnosis.

Elimination, reintroduction and maintenance, with transitions you control.
Meals, symptoms and reintroduction on one timeline and a calendar.
Save meals and recipes you eat often, and find foods in the library.
Meals and symptoms never go to iCloud; an exported backup moves them to a new iPhone.
Outside the app
On your Lock Screen and Home Screen.
Gutli does not wait for you to open it.
- Live Activity
- The meal you are watching, with the time since you ate.
- Widget
- Today’s diary, on the Home Screen.


How it works
How Gutli works.
Gutli makes the daily part of a low-FODMAP protocol quick: log what you ate and how you felt, move through elimination and reintroduction when you decide to, and see patterns with their confidence. It records; it does not diagnose.
- 1Log
Meals with portions
Time, ingredients, grams, notes and an optional photo, with a low/moderate/high portion reference.
- 2Check in
How you feel
Pain, bloating, nausea, energy and bowel check-ins with the Bristol Stool Chart.
- 3Reintroduce
One group at a time
Record food, dose, duration and response for each FODMAP group.
- 4Report
For your appointment
Weekly and monthly summaries and a clinician-ready PDF or CSV.
Your data, plainly
What stays yours.
Gutli keeps your food and symptom journal on your iPhone only and never stores it in iCloud. There is no Lucernel account and no Lucernel server holding your records.
| Data | Where it is kept | Who can see it |
|---|---|---|
| Meals, portions, symptoms, bowel check-ins, protocol phases, reintroduction results, saved meals, photos, reminders and settings that you create | Your iPhone only, never iCloud | Only you |
| Purchase status | Apple and RevenueCat | Lucernel sees the subscription status, never your payment details |
| Analytics events | PostHog | Lucernel, without your records and without your name |
| Crash reports | PostHog | Lucernel, to fix the crash |
| Support emails | Lucernel mailbox | Lucernel |
Guides about Gutli
Read before you choose.
Best of
Best low-FODMAP apps for iPhone
Guide
Low-FODMAP reintroduction: how to test one group at a time
Frequently asked questions
Is Gutli on the App Store?
Gutli is in development. This page will link to the App Store as soon as it is released.
Does Gutli need an account?
Gutli has no email-and-password account.
How much does Gutli cost?
Gutli Premium is available as a weekly subscription, a yearly subscription or a one-time lifetime purchase. Prices and renewal terms are shown in the app before purchase.
Where does Gutli store my data?
Gutli keeps your food and symptom journal on your iPhone only and never stores it in iCloud. There is no Lucernel account and no Lucernel server holding your records.
How do I get help with Gutli?
Email [email protected] or open the Gutli support page. Privacy and deletion requests go to [email protected].

Gutli
Food and symptom journal for low-FODMAP.
Noted. Every tap tells us how many people want Gutli on Android.










