What it does
Everything CrohnOlogy can do today. No aspirational promises, just what's in the app.
Spot the patterns that matter
The real value isn't just logging. It's seeing the connections. Two tabs keep things clear: Overview gives you a weekly summary, a bowel-movement timeline — every day at a glance, colour-coded by stool type, with night-time episodes marked when logged — guided by your family's night windows, set separately for school nights and other nights — and any blood clearly marked, scrollable through three months of history at a weekly or monthly zoom — and a whole-history growth chart plotting weight and height together, with latest, highest and lowest at a glance. Tap any day for its details. Patterns is where the connections live — a My Patterns card separates confirmed patterns from safe attributes as you log, and shows the foods eaten before a concerning stool, so you can spot what might be behind flare-ups. Perfect for bringing useful context to appointments with your care team.
Six ways to log
Every entry is part of one shared, encrypted family timeline. Tap an entry to view or edit it; entries can be back-dated to when they actually happened.
The journal is built for skimming on a hard day: meals, medication batches and unflagged stools sit as one-line quiet rows so symptoms, pain and flagged stools stand out — and every entry stays visible, in order. Day headers stick while you scroll, days read cause → effect (breakfast above the evening pain it may have fed), and opening the journal lands on today. Filter chips (Food, Stool, Medication, Symptoms, Pain, Measurements) hide a type when you need a focused read.
Food
- Tap the main protein — fish, red meat, poultry, egg, or beans and lentils — then how it was cooked. Preparation is multi-select, so a mixed-prep meal (fried chicken with boiled rice) is one entry, not two.
- Flag what else was in it using labels a child recognises: milk or cheese, bread or pasta, fatty or creamy, spicy, fruit, potato… or none of these.
- Nothing is required: a time and a meal type alone is a valid log, so a bad day never gets in the way of logging.
- Meal type: Breakfast, Lunch, Dinner, or Snack.
- A one-tap appetite rating on a friendly 1–5 scale — from Zero appetite to Intensely hungry — so a drop in appetite, often an early warning of a flare-up, stands out on the timeline.
- A free-text description for anything you want to remember.
- Optional photo, captured in-app or picked from the gallery.
Stool
- Bristol Stool Scale (1–7) tap-to-select grid.
- Associated pain level (0–10, where 0 means no pain).
- Blood presence indicator.
- Night-movement toggle — pre-answered from your family's night windows, one tap to override.
- Urgency rating (1–5).
- Optional notes and photo. Stool photos are blurred by default in the timeline for privacy; tap to reveal.
Pain
- Tap where it hurts on a friendly body map — nine tummy zones in a child's words (“Top Left Tummy”, “Belly Button Area”), with the clinical term alongside for the appointments.
- Pain in more than one place? Zones combine freely — tummy areas with joints — and All Over covers diffuse pain, so one entry tells the whole story.
- A child-friendly intensity dial from A little to The worst, with a slider for fine-tuning.
- What it feels like: tick any of Cramps, Stinging, Ache, Bloated, or Butterflies — or skip it.
- Optional notes. In the journal, each pain entry shows a miniature body map with the recorded areas lit — where it hurt, readable at a glance.
Symptoms
- Fatigue on a simple 1–5 energy scale, from very low to very high.
- Nausea on a 1–5 severity scale, with a clear warning marker when vomiting happens.
- Optional notes for anything worth remembering — encrypted like all free-text.
- Logging a symptom takes as few as three taps, for the hardest days.
Medication
- Keep a simple family roster of prescriptions: name, dose, and schedule.
- Log a day's doses with one tap per medication from a checklist.
- Each dosing event appears as a single grouped card on the timeline, with names and doses.
- Prescriptions that stop can be switched off or removed; past doses keep their record.
Measurements
- Weight in kilograms and height in centimetres, captured together in one place.
- The form is pre-filled from your last measurements, and only what has changed gets saved.
- Track growth and fluctuations over time alongside everything else.
One private timeline, shared with family
The whole family logs into the same encrypted timeline. Three roles keep access under control:
Admin
Full access. Invites new members, manages roles, and can recover access for others.
Member
Full access to log, view, edit, and delete entries in the Report and Journal tabs.
Viewer
Read-only access to the Journal timeline. The Report button is disabled and greyed out.
Adding a family member
Adding a family member uses a secure handshake, not a guessable password:
- The Admin generates a QR code.
- The new member signs in and scans the QR code.
- A secure handshake delivers the family encryption key to the new device. No passwords shared, no keys sent over the internet.
- The member joins the family with the right role.
Each family's data is completely isolated from every other.
Unlocked by you, not a password
CrohnOlogy uses biometric authentication (face or fingerprint) to unlock the app. After the first unlock, a short-lived session keeps things smooth for 120 seconds, so photos and entries appear instantly without repeated prompts. The session clears automatically after 120 seconds, or after 5 minutes in the background.
Photos that stay private
Quick to capture, light on data
Photos are optimised on the phone before they're sent, so uploads are fast and won't eat your mobile data.
Encrypted and private
Every photo is encrypted before it leaves the phone. Only authorised family members can view them.