GutLedger — IBS & FODMAP Tracker App | 100% Private, No Account

Everything You Need to Track

Ten types of health logging, designed to be quick and easy.

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Food & Drink Diary

Log meals and drinks with descriptions, photos, and notes. The built-in FODMAP database auto-tags foods as low, moderate, or high FODMAP. Drinks are tracked separately so you can spot triggers like coffee, alcohol, or fizzy drinks.

Meal ingredient breakdown for better trigger tracking
Smart suggestions with trigger warnings
FODMAP auto-tagging from 470+ food database
Barcode scanning with offline caching (Pro)
Photo attachments for meals
Drink quick-select (water, tea, coffee, etc.) with quantity tracking

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Symptom Tracking

Record exactly what you're feeling with 10+ symptom types, severity ratings, and duration tracking. Understand when symptoms hit and how bad they get over time.

Bloating, pain, nausea, cramps, and more
Severity scale (1–5)
Duration tracking
Period tracking for hormonal correlation
Quick time selection buttons

😊

Mood & Stress

Track your emotional state alongside gut symptoms. Rate mood and stress on a 5-point scale to uncover the gut-brain connection in your data.

Mood rating (1–5)
Stress rating (1–5)
Period tracking
Notes for context

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Stool Log

Bristol Stool Scale classification with urgency tracking. Add private photo records for medical consultations — automatically blurred until you choose to reveal them.

Bristol Stool Scale (Type 1–7)
Urgency level tracking
Photo with auto-blur privacy (Pro)
Tap-to-reveal for sensitive images

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Sleep Quality

Log which night you slept and when you woke up. Rate sleep quality on a 5-point scale to see how rest affects your gut the following day.

"Which night?" quick selection
Wake-up time picker
Quality rating (1–5)
Hours automatically calculated

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Fluid Tracking

All drinks count towards your daily fluid target. Quick-select common drinks like water, tea, and coffee, or add your own with approximate quantities.

Quick-select: water, tea, coffee, juice, and more
Optional quantity (e.g., 500ml, large mug)
Smart fluid target with progress bar
Customisable daily goal

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Menstrual Cycle Tracking

Log periods and track your cycle phase. See how hormonal changes affect your gut with period overlay on all calendar views. IBS symptoms often vary with cycle phase — now you can see why.

Period logging with start/end dates
Current cycle phase display
Period overlay on all calendars
IBS-relevant phase descriptions

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FODMAP Elimination Diet Guide Pro

Follow a structured 3-phase FODMAP elimination protocol with guided reintroduction challenges. The gold standard approach recommended by dietitians, built right into the app.

Elimination phase with progress tracking
7 FODMAP group reintroduction challenges
3-day challenge + 3-day washout protocol
Pass/partial/fail results per food group
Personalisation phase with your tolerances

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Medication Tracking

Log medications, supplements, and remedies with the time and dose taken. See whether specific treatments correlate with better or worse symptom days over time.

Medication name, dose & time
Notes for reason taken
Appears on your daily timeline
Correlate with symptom patterns

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Home Screen & Daily Gut Score

Start each day knowing where you stand. Your daily gut score is a composite of recent symptom severity, sleep quality, stress, and hydration — giving you a single number to track over time.

0–100 daily gut score
Fluid intake progress bar
Recent timeline preview
Quick-add buttons for all tracking types

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Meal Plans

Create and name weekly meal plans to build your safe-food rotation. Assign meals to days, then log an entire day’s eating in seconds — ideal for sticking to a low-FODMAP routine.

Create and name custom meal plans
Assign meals to specific days
One-tap log from a plan
FODMAP status shown per meal

Smart Insights That Help

GutLedger analyses your data to find patterns you'd never spot yourself.

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Trigger Food Detection Pro

A 60-day recency-weighted decay algorithm identifies trigger foods with confidence ratings — recent correlations count more than old ones. See confidence %, symptom frequency, and your top triggers per food.

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Food & Mood Correlation

Discover which foods lift or tank your mood. Time-windowed analysis compares what you ate with how you felt in the hours that followed.

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Sleep & Symptom Link

See how your sleep quality relates to symptom severity the following day. Poor sleep often means worse gut days — now you can prove it.

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Symptom Heatmap

A GitHub-style calendar showing your symptom patterns over the last 3 months. Instantly see good weeks, bad weeks, and whether things are improving.

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Weekly Trends

Track your symptom frequency, mood averages, and food variety week over week. Spot the long-term trajectory of your gut health.

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FODMAP Analysis

See the ratio of low, moderate, and high FODMAP foods in your diet. Get a clear picture of your FODMAP load and how it maps to symptoms.

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Smart Suggestions

Get grouped food suggestions based on your history: safe picks that never caused symptoms, recent meals for quick re-logging, and foods you haven't tried in a while. Trigger warnings shown inline.

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Predictive Alerts

After logging a known trigger food, GutLedger calculates when symptoms typically appear and sends you a heads-up notification. Be prepared before symptoms hit.

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Emergency Toilet Finder

Need a loo in a hurry? One tap opens your maps app to find the nearest public toilet. No extra permissions needed — your maps app handles everything.

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Symptom Time Patterns Pro

See when your symptoms most commonly strike — morning, afternoon, or evening. Use this to time meals, medication, and activities around your gut’s natural rhythm.

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Water & Symptom Correlation Pro

See how your daily hydration level correlates with symptom severity. Many IBS sufferers find dehydration is a hidden trigger — this analysis helps you prove it for your own body.

Privacy & Security

Your health data deserves the highest level of protection.

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Biometric Lock

Protect your health diary with fingerprint or face authentication. The app locks automatically when you switch away and requires biometric unlock to access.

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On-Device Only

All data stored in a local SQLite database on your phone. Nothing is ever transmitted to any server. We literally can't see your data.

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Photo Privacy

Sensitive photos (stool logs) are automatically blurred in previews. Tap to reveal only when you need to. Your privacy is respected at every level.

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No Tracking

Zero analytics. Zero telemetry. No ad SDKs. No data brokers. GutLedger doesn't even require an internet connection to work.

GutLedger Pro

Unlock the full toolkit with a one-time purchase. No subscriptions, no recurring fees — pay once, own it forever.

Free

£0 forever

Food & drink diary with FODMAP auto-tagging
470+ FODMAP food database
Symptom tracking (10+ types, severity & duration)
Bristol Stool Scale tracking
Mood & stress logging
Sleep quality tracking
Fluid & water tracking with daily target
Medication tracking
Period & menstrual cycle tracking
Meal plans
Daily gut score on home screen
Timeline (30-day rolling history)
Smart food suggestions with trigger warnings
Biometric app lock
Dark mode
Daily reminders & notifications
100% offline — no account ever

Best Value

Pro

£5.99 one-time

Everything in Free, plus:
Trigger food analysis with confidence ratings
60-day recency-weighted decay algorithm
Smart hero card — your single best insight
9 analytics sub-screens (food, mood, sleep, heatmap, trends, FODMAP, time patterns, water, predictions)
Guided FODMAP elimination diet (3 phases, 7 food groups)
Barcode scanner with offline caching
Stool photo tracking (auto-blurred)
PDF doctor reports (with optional stool photos)
CSV data export
Database backup & restore
Predictive symptom alerts
All future Pro features included

Frequently Asked Questions

Everything people ask before they download.

Is my data really private if the app is free?

Yes. GutLedger has no accounts, no cloud sync, and no analytics SDKs. Your diary lives in a local SQLite database on your phone and never leaves it. Even I, the developer, can’t see your data — there’s no server to store it on. The app works fully offline and requires no internet connection to use.

What’s the difference between Free and Pro?

The free tier covers the entire core experience — food diary, FODMAP auto-tagging, symptoms, stool, mood, sleep, hydration, meds, period tracking, meal plans, daily gut score, and timeline. Pro (a one-time £5.99) unlocks the analysis engine: trigger-food detection with confidence ratings, the 9-sub-screen insights dashboard, guided FODMAP elimination, barcode scanner, stool photos, PDF doctor reports, CSV export, and predictive alerts. No subscription — pay once, own it.

Which platforms is GutLedger available on?

GutLedger is live on both the Apple App Store and Google Play Store — just search for “GutLedger” or tap the download buttons above. Updates roll out automatically through your phone’s usual app store. The same features and pricing apply on both platforms.

How does the FODMAP database work?

GutLedger includes 470+ foods categorised as low, moderate, or high FODMAP based on Monash University research. When you log a meal, the app auto-tags each ingredient so you can see at a glance whether you’re loading up on triggers. It supports multi-word matches (“ice cream”, “soy sauce”) and works through barcode scanning with offline caching in Pro.

Can I share reports with my GP or dietitian?

Yes. Pro includes PDF doctor reports with your symptom history, food patterns, and trigger analysis — ready to email or print for an appointment. There’s also CSV export for your raw data if you want to analyse it yourself or hand it over in a structured form.

Will I lose my data if I change phones?

Pro includes database backup & restore — export your entire diary to a file and restore it on a new phone with a tap. Your data stays yours; I just give you the keys to move it around.

Is this medical advice?

No. GutLedger is a tracking and pattern-spotting tool, not a diagnostic device. It helps you gather the data and observations that make conversations with your GP, gastroenterologist, or dietitian more productive. Always follow the advice of a qualified clinician for your actual treatment.

Who built this, and why?

I built it alone. I have IBS myself and spent years juggling a Notes-app diary, a separate FODMAP reference, a symptom app that wanted a subscription, and a mood tracker that sold my data. GutLedger is the one-place-for-everything tool I wished existed. Feedback from real IBS users shapes what I build next — there’s a feedback link in the app and on this page.

Take Control of Your Gut Health

How It Works

Log Everything

Spot Patterns

Feel Better