Know your gut.
for iPhone
Track symptoms, find food triggers, and walk into your doctor's office with real answers. 100% private — your data never leaves your device.
Understand your gut,
not just your symptoms.
The GutLog iOS app lets anyone with IBS, IBD, or Crohn's track symptoms, identify triggers, and share a professional report with their doctor — all from their phone.
Logging
Log a bathroom visit in under 30 seconds.
Track Bristol stool type, urgency (1–5), pain (0–10), color, smell, symptoms, blood, mucus, duration, and context triggers. All taps — no typing required.
Download freeInsights
Automatically connects what you eat to how you feel.
The Correlation Engine links triggers like Dairy, Caffeine, Stress, or Gluten to your symptoms. It deduplicates factors logged within 4 hours so your data stays clean. Over time it surfaces insights like 'Dairy may be a trigger.'
Download freeDoctor Reports
Walk into your appointment prepared.
Generate a professional PDF of your full digestive history, formatted specifically for gastroenterologists. Stop struggling to remember symptoms from weeks ago — hand your doctor a clear, comprehensive record.
Download freeAnalytics
Your gut health, quantified.
See a Gut Health Score out of 100, a Pattern Stability Score, Tomorrow's Outlook prediction, Time of Day distribution, and a 60-day frequency heatmap — all processed on your device, never in the cloud.
Download freeLogging
Log a bathroom visit in under 30 seconds.
Track Bristol stool type, urgency (1–5), pain (0–10), color, smell, symptoms, blood, mucus, duration, and context triggers. All taps — no typing required.
Download freeInsights
Automatically connects what you eat to how you feel.
The Correlation Engine links triggers like Dairy, Caffeine, Stress, or Gluten to your symptoms. It deduplicates factors logged within 4 hours so your data stays clean. Over time it surfaces insights like 'Dairy may be a trigger.'
Download freeDoctor Reports
Walk into your appointment prepared.
Generate a professional PDF of your full digestive history, formatted specifically for gastroenterologists. Stop struggling to remember symptoms from weeks ago — hand your doctor a clear, comprehensive record.
Download freeAnalytics
Your gut health, quantified.
See a Gut Health Score out of 100, a Pattern Stability Score, Tomorrow's Outlook prediction, Time of Day distribution, and a 60-day frequency heatmap — all processed on your device, never in the cloud.
Download freeBuilt for people managing
real conditions.
Everything you need to
understand your body.
All data stored locally on your device — never sent to servers
Bristol stool types 1–7 with detailed color picker (30+ shades)
Correlation Engine links triggers to symptoms automatically
PDF doctor reports formatted for gastroenterologists
AI Prompt Generator for deeper lifestyle analysis with ChatGPT
60-day heatmap, time-of-day patterns, and weekly frequency charts
Fully localized in 11 languages including Turkish, Japanese, Korean
RevenueCat-powered subscriptions — cancel anytime through Apple
All data stored locally on your device — never sent to servers
Bristol stool types 1–7 with detailed color picker (30+ shades)
Correlation Engine links triggers to symptoms automatically
PDF doctor reports formatted for gastroenterologists
AI Prompt Generator for deeper lifestyle analysis with ChatGPT
60-day heatmap, time-of-day patterns, and weekly frequency charts
Fully localized in 11 languages including Turkish, Japanese, Korean
RevenueCat-powered subscriptions — cancel anytime through Apple
Start free. Upgrade
when you're ready.
All plans include the core tracking features. Upgrade to Pro to unlock deep insights and doctor reports.
Free
- Quick logging (Bristol, urgency, pain, color)
- Basic analytics — last 35 entries
- History calendar — last 30 days
- 100% private & offline
Pro
Save 70%- Everything in Free
- Unlimited logging history
- Correlation Engine
- Advanced analytics & 60-day heatmap
- PDF Doctor Reports
- AI Prompt Generator
- Multi-trigger filtering
- Retroactive entry editing
Managed by Apple. Cancel anytime.
Your health data is nobody's business but yours.
GutLog is built on a strict privacy-first architecture. We don't have servers holding your data. We can't sell what we don't have.
Stored only on your iPhone
All logs, symptoms, and patterns live in your device's local storage using AsyncStorage. No cloud sync, no GutLog servers.
No account required
You never sign up. There's no email, no profile, and no identity. Nothing to breach, nothing to leak.
Data only moves on your terms
Data leaves the app only if you choose to: exporting a PDF to your doctor, using iCloud backup, or copying into an AI tool.
Stop guessing.
Start knowing.
Download GutLog free on iPhone. No account. No subscription required to start.
Requires iOS 15.1 or later