Take back control of your Crohn's disease

Crohnly tracks your symptoms, predicts flares and connects you to Léo — your AI medical assistant, available 24/7.

+3,200 IBD patients

Trust Crohnly every day

App Store — Free

Crohnly — dashboard score de risque, suivi symptômes

Track your infusion cycle without missing a thing

Treatment tracking

Track your infusion cycle without missing a thing

Record each session in 30 seconds. Crohnly automatically reminds you of deadlines, tracks your post-infusion reactions and generates a clear summary for your gastroenterologist.

Identify YOUR trigger foods — not a generic list

AI Food Journal

Identify YOUR trigger foods — not a generic list

Take a photo of your meal. Crohnly analyzes its composition and automatically correlates with your symptoms over the next 72 hours.

Léo knows your file. No need to explain everything again.

AI Assistant

Léo knows your file. No need to explain everything again.

Léo is not a generic chatbot. He knows your medications, your flare history and your triggers.

7 days

Free trial
4.8 ★

App Store rating
0

Countries available
CA · US · UK · FR · DE
iOS 16+

Required · HealthKit integrated

Crohnly

Infusion tracking·

AI food diary·

Flare prediction·

Assistant Léo·

Daily risk score·

Smart reminders·

Gastroenterologist report·

HealthKit·

Infliximab tracking·

Humira tracking·

Crohn & UC·

IBD·

iOS 16+·

Features

What Crohnly does for you

Prediction

Anticipate your next flare before it arrives

A score updated every day, calculated from 5 continuous signals.

Daily score 0–110

5 signals analyzed continuously for a score updated every morning.
Early alert

Crohnly alerts you as soon as an unusual pattern repeats over 48 hours.

Download for free

Consultation

Arrive at your gastro with data, not impressions

A structured summary of your month — symptoms, treatments, trends.

Automatic summary of your treatment cycle
30-day symptom evolution chart
PDF export in one tap

Download for free

Daily

30 seconds a day. That's it.

Entry guided by Léo, reminders according to your cycle. Your HealthKit data synchronized automatically.

Quick entry morning or evening, guided by Léo
Personalized reminders based on your cycle
Data automatically synchronized with HealthKit

Download for free

Simple & fast

How it works in 3 steps

Download Crohnly

Free · iOS 16+

Available on the App Store. iPhone and iPad. No credit card required to get started.

Introduce yourself to Léo

5 minutes · Once only

Treatment, medications, known triggers. Léo memorizes everything and personalizes tracking from day one.

Take control of your disease

7-day free trial

Daily tracking, smart alerts, automatic reports. Concrete data for every consultation.

Download for free

Testimonials

What
patients say

4.8/5.0 — App Store

127 App Store reviews

Sophie L.

Crohn since 2021 · Paris, France

Finally an app that truly understands Crohn's disease. Not just a journal — an AI that knows my medications and history. Léo saved me two emergency consultations.