Know what your poopis telling youin 3 seconds.
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Stool Analysis Ready
Upload a stool photo or start the live camera to inspect consistency, extract color histogram data, and classify your digestive motility.
Processing Stool Morphology Vectors
Client-Side WASM & WebGL Inference • 100% Private
Bristol Type 4
31.1% confidence
Health Screening
AI Analysis
Your stool is brown with no blood or mucus, which is reassuring. The soft, large shape looks a bit off from ideal, so it is worth watching in your next logs.
Action to Consider
Try a 10 minute walk after your biggest meal today, and chew each bite a little more slowly.
A short walk can help your gut move food along more smoothly. Slower chewing may also reduce how much extra air and strain your digestion deals with.
The 7 Bristol Stool Types
From constipated (Type 1) to ideal (Type 4) to rapid diarrhea (Type 7).
Separate Hard Lumps
Hard, nut-like pellets (difficult to pass). Severe slow transit & low hydration.
Sausage-Shaped & Lumpy
Compacted hard lumps formed into a sausage. Mild constipation with low dietary fluid.
Sausage with Surface Cracks
Formed cylinder with surface fissures. Healthy, normal transit with moderate hydration.

Smooth & Soft Snake
Smooth, supple sausage passed effortlessly. The clinical gold standard of gut health.
Fluffy Pieces with Ragged Edges
Mushy consistency with torn borders. Indicates rapid colon transit, stress, or food intolerance.
Soft Blobs with Clear Edges
Clear-cut soft pieces passed easily. Common with low soluble fiber or mild rapid transit.
Watery, No Solid Pieces
Entirely liquid with zero solid chunks. Urgent evacuation; high risk of dehydration.

Type 4
Clinical Gold StandardSmooth & Soft Snake
Smooth, supple sausage passed effortlessly. The clinical gold standard of gut health.
Guidance: Peak gut microbiome vitality! Continue your balanced nutrition and hydration habits.
Real People.
Real Breakthroughs.
Navigating digestive discomfort or trying a new dietary protocol shouldn't be isolating. Connect with thousands of members exchanging verified fiber strategies, probiotic discoveries, and transit breakthroughs in a judgment-free environment.
@gut_pioneer
VERIFIEDGastroenterology Patient • 30-Day Streak
"Swapping cow milk for homemade kefir + 5g ground chia seeds completely stabilized my transit motility. Hit 21 consecutive days of Bristol Type 4! The daily score tracker kept me honest."
@gut_pioneer
VERIFIEDGastroenterology Patient • 30-Day Streak
"Swapping cow milk for homemade kefir + 5g ground chia seeds completely stabilized my transit motility. Hit 21 consecutive days of Bristol Type 4! The daily score tracker kept me honest."
Gamify Consistency.
Eradicate the Stigma.
Optimal gut motility is built through small, disciplined daily habits. Earn Protos Points every time you log a scan, celebrate consecutive days of Bristol Type 4 transit, and unlock milestones alongside peers dedicated to gut wellness.
Transforming Digestive Health & Daily Habits
See how automated clinical Bristol classification and private gut tracking helped thousands optimize nutrition, identify sensitivities, and regain digestive comfort.
Marcus K.
Product Designer
"Gastroenterologists always told me to log symptoms, but guessing stool types was impossible. This tool classified my exact Bristol profile in seconds and suggested fiber tweaks that transformed my mornings!"
Arthur Pendelton
Creative Director
"Finally a tool that doesn't confuse Type 2 with Type 3! Caught my dehydration patterns after long flights and reminded me to hydrate before constipation set in."
Rachel Adams
Functional Medicine Specialist
"I always assumed I had chronic IBS until the color histogram and consistency metrics revealed my trigger was specific artificial sweeteners. Total game-changer!"
Lucas Wright
Software & Nature Guide
"On-device sub-500ms analysis is stunning. Zero image uploads to servers, 100% browser privacy. Knowing photos never leave my phone gives me confidence to log daily."
Dr. Sarah Jenkins
Functional Medicine MD
"Recommending this on-device stool scanner to all my functional gut patients. Clinical accuracy without patient privacy concerns."
Marcus K.
Product Designer
"Gastroenterologists always told me to log symptoms, but guessing stool types was impossible. This tool classified my exact Bristol profile in seconds and suggested fiber tweaks that transformed my mornings!"
Arthur Pendelton
Creative Director
"Finally a tool that doesn't confuse Type 2 with Type 3! Caught my dehydration patterns after long flights and reminded me to hydrate before constipation set in."
Rachel Adams
Functional Medicine Specialist
"I always assumed I had chronic IBS until the color histogram and consistency metrics revealed my trigger was specific artificial sweeteners. Total game-changer!"
Lucas Wright
Software & Nature Guide
"On-device sub-500ms analysis is stunning. Zero image uploads to servers, 100% browser privacy. Knowing photos never leave my phone gives me confidence to log daily."
Dr. Sarah Jenkins
Functional Medicine MD
"Recommending this on-device stool scanner to all my functional gut patients. Clinical accuracy without patient privacy concerns."
Alexander Scott
Product Designer
"Gastroenterologists always told me to log symptoms, but guessing stool types was impossible. This tool classified my exact Bristol profile in seconds and suggested fiber tweaks that transformed my mornings!"
Ryan Taylor
Software & Nature Guide
"On-device sub-500ms analysis is stunning. Zero image uploads to servers, 100% browser privacy. Knowing photos never leave my phone gives me confidence to log daily."
Flora Henderson
IBS Navigator
"Tracked a 3-week transition from sluggish Type 2 to consistent Type 3 and 4 with timed magnesium. So reassuring to see data."
David Levine
Gut Health Enthusiast
"Type 4 for 6 days straight after introducing acacia fiber and 3L morning water. The Bristol tracking graph finally makes sense!"
Elena R.
Gastroenterology Patient • 30-Day Streak
""Swapping cow milk for homemade kefir + 5g ground chia seeds completely stabilized my transit motility. Hit 21 consecutive days of Bristol Type 4! The daily score tracker kept me honest.""
Alexander Scott
Product Designer
"Gastroenterologists always told me to log symptoms, but guessing stool types was impossible. This tool classified my exact Bristol profile in seconds and suggested fiber tweaks that transformed my mornings!"
Ryan Taylor
Software & Nature Guide
"On-device sub-500ms analysis is stunning. Zero image uploads to servers, 100% browser privacy. Knowing photos never leave my phone gives me confidence to log daily."
Flora Henderson
IBS Navigator
"Tracked a 3-week transition from sluggish Type 2 to consistent Type 3 and 4 with timed magnesium. So reassuring to see data."
David Levine
Gut Health Enthusiast
"Type 4 for 6 days straight after introducing acacia fiber and 3L morning water. The Bristol tracking graph finally makes sense!"
Elena R.
Gastroenterology Patient • 30-Day Streak
""Swapping cow milk for homemade kefir + 5g ground chia seeds completely stabilized my transit motility. Hit 21 consecutive days of Bristol Type 4! The daily score tracker kept me honest.""
Clinical FAQs & Expert Guidance
Frequently asked clinical questions, privacy architecture, and digestive wellness guide.