Free Interactive Clinical Tools
Understand your digestive patterns instantly
Free browser-based clinical calculators to estimate gut transit speed, analyze stool forms, and prepare structured prompts for AI models.
Motility & Transit
Bristol Stool Chart & Transit Calculator
Select your stool form, color, urgency, and pain level to estimate colonic transit hours and detect clinical bowel motility patterns.
- Estimates transit time from <10h to 100+ hours
- Clinical red-flag alert for black or red stool
- Assesses rectal tenesmus and pelvic floor signals
Free online toolOpen calculator
AI & Pattern Analysis
AI Prompt Generator for Gut Health
Convert your monthly Bristol percentages, pain averages, and suspected triggers into an anonymized clinical prompt for ChatGPT and Claude.
- 100% private and anonymized clinical prompt
- Generates physician discussion questions
- One-click copy to clipboard
Free online toolOpen calculator
On-Device Privacy First
Automate your symptom tracking on iOS
GutLog 1.5.6 records your bowel habits in 30 seconds, runs Poisson arrival trigger calculations, and exports A4 reports for your gastroenterologist.