Your gut has patterns. Tracking them shouldn’t be a chore.

Doctors and dietitians rely on what you remember about your bowel habits. But diary entries get missed, details fade, and stool form is easy to misjudge.

Who remembers last week’s bowel movements?

Throne makes bathroom logging automatic. Less time keeping records, more time connecting the dots.

Functional gut health

A shared language for stool.

The Bristol Stool Scale describes seven stool forms, from separate hard pieces to liquid stool. It gives observations a consistent vocabulary, useful alongside frequency, color, estimated volume, and time of day.

Seven forms. One consistent scale.

Tap a type

Type 4

Smooth and soft

How Throne records it

Throne’s AI, trained by practicing physicians, classifies stool form and color from images and estimates stool volume. Every detected visit adds to your frequency and timing. In a validation study, it read stool form as accurately as gastroenterologists. See the study.

How to interpret it

Compare several days with your own baseline and your symptom notes: one stool says little, but a week of them shows a pattern. Color and volume need context too. Read how stool form tracks gut transit time.

Validation study · ACG 2026

Throne’s AI reads stool form as accurately as gastroenterologists.

Five board-certified gastroenterologists and Throne’s AI each classified the same set of 278 photos on the Bristol Stool Scale. The AI agreed with doctors as closely as the doctors agreed with each other, and when it differed, it was usually by a single type: 3 versus 4. The study was accepted for presentation at the American College of Gastroenterology’s 2026 annual meeting in Nashville.

  • 278 stool photos

    Spread evenly across all seven Bristol types. None were used to train Throne’s AI.

  • 5 gastroenterologists

    Each one rated every photo on their own, using the standard Bristol chart.

  • 90% agreement on Type 4

    On Type 4, the smooth, soft stool most people aim for, the AI matched the doctors’ consensus 90% of the time. Two doctors matched each other only 60% of the time.

Shori C, Nowaski S, Rangarajan K, Capodilupo J, Blumberg T, Seminerio-Diehl J, Pimentel M. Evaluating the efficacy of an artificial intelligence–enabled toilet-mounted device for Bristol Stool Scale assessment. Accepted for presentation at the American College of Gastroenterology 2026 Annual Scientific Meeting, Nashville. A study by Throne Science and gastroenterologists, including Dr. Mark Pimentel of Cedars-Sinai.

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Hydration

Your hydration, read from urine color.

Urine concentration is one of the simplest everyday clues to hydration: darker, more concentrated urine often means you need more fluid. Throne estimates it from urine color and turns it into a hydration score.

From urine color to an estimate

Drag the color

Estimated urine concentration

In between

  1. Urine color, read at every visit
  2. Throne’s AI estimate
  3. Urine concentration and hydration score
How Throne records it

Throne reads urine color at every visit, and its AI estimates how concentrated your urine is. Because it happens every time you go, you see your hydration across the day and over weeks, not a single snapshot.

How to interpret it

Concentration rises and falls with what you drink, exercise, diet, medicines, and time of day; first-morning urine is usually the most concentrated. Some foods and vitamins can also change urine color. Read research on urine color and hydration.

Bathroom habits

Timing adds another dimension.

Time on toilet covers the whole visit. Time to first evacuation is how long it takes from sitting down to the first bowel movement.

Two intervals, one session

Drag through the session

Time to first evacuation

Time on toilet

How Throne records it

Throne times every seated visit on its own. A visit without a bowel movement has no time-to-first-evacuation value.

How to interpret it

A long wait can reflect difficulty going; a very short one can reflect urgency. Phone scrolling counts too, so read timing alongside how you felt.

Urinary flow

A view of lower urinary tract function.

A flow-rate curve shows how urine flow changes during a void. Peak flow (Qmax) is the highest rate; average flow (Qavg) summarizes flow over the time urine is flowing.

Reading a flow-rate curve

Drag along the curve

Flow rises to a peak, then returns to zero. Qmax marks the highest flow; Qavg marks the average over flow time. Flow rate (mL/s) Time (s) Qmax · peak Qavg · average

100%of peak flow · this is Qmax

Qavg is voided volume divided by flow time.

How Throne records it

When you stand to pee, Throne listens to the stream and estimates a flow-rate curve, peak flow (Qmax), and average flow (Qavg). Flow measurements are for stand-to-pee sessions only.

How to interpret it

Flow depends on how full your bladder is, how strongly it contracts, and anything narrowing the outlet, such as an enlarged prostate. One reading says little; a trend across many visits is worth bringing to your doctor. Read the EAU guidance on uroflowmetry.

Scientific Advisory Board

Guided by the people who wrote the guidelines.

Our advisors include the lead authors of clinical guidelines for ulcerative colitis, SIBO, and colorectal cancer screening. Dr. Mark Pimentel also co-authored our first validation study.

  • Dr. David Rubin

    Lead author, ulcerative colitis guidelines · UChicago Medicine

    Dr. David Rubin

    Lead author, ulcerative colitis guidelines · UChicago Medicine

    Dr. David Rubin helps set the standard for ulcerative colitis care. He is the lead author of the American College of Gastroenterology’s 2025 ulcerative colitis guidelines—the recommendations that guide doctors in treating adults with the disease.

    As Chief of Gastroenterology, Hepatology and Nutrition at UChicago Medicine, he combines patient care with research into Crohn’s disease and ulcerative colitis, bringing deep expertise in how digestive symptoms change over time.

  • Dr. Suzelle Moffitt

    Four decades of patient care · Clinical advisor

    Dr. Suzelle Moffitt

    Four decades of patient care · Clinical advisor

    Dr. Suzelle Moffitt brings four decades of frontline medical experience to Throne. Practicing since 1986, her career spans patient care, health law, and service as general counsel for a regional health system—a rare combination of clinical and healthcare leadership experience.

    Her conversations with her son, Throne co-founder Scott Hickle, helped spark the company. She recognized how much bowel patterns matter to patients, and how useful a reliable record could be in everyday care.

  • Dr. Vipul Jairath

    IBD clinical-trial leader · Western University

    Dr. Vipul Jairath

    IBD clinical-trial leader · Western University

    Dr. Vipul Jairath helps determine whether new treatments for Crohn’s disease and ulcerative colitis truly work. His research shapes how clinical trials are designed and how they measure meaningful improvements in patients’ lives.

    A Professor of Medicine and holder of the McDonald Endowed Chair in IBD Clinical Research at Western University, he trained in gastroenterology in London and Oxford. Western credits his work with directly influencing clinical-trial design, regulatory science, and patient care.

  • Dr. Satish Rao

    Pioneer in constipation treatment · Augusta University

    Dr. Satish Rao

    Pioneer in constipation treatment · Augusta University

    Dr. Satish Rao pioneered biofeedback therapy for a common cause of chronic constipation—helping patients retrain the muscles needed for a bowel movement. His work has advanced how doctors understand and treat problems with the way the gut moves.

    He holds the Harrison Distinguished Chair in Gastroenterology at Augusta University and co-authored the American College of Gastroenterology’s SIBO guideline. His expertise connects everyday bowel symptoms with the science of gut function.

  • Dr. Mark Pimentel

    Lead author, SIBO guideline · Cedars-Sinai

    Dr. Mark Pimentel

    Lead author, SIBO guideline · Cedars-Sinai

    Dr. Mark Pimentel is a pioneer in understanding the connection between gut bacteria and digestive symptoms. He is the lead author of the American College of Gastroenterology’s clinical guideline on small intestinal bacterial overgrowth (SIBO), helping define how doctors diagnose and treat the condition.

    He leads the MAST research program at Cedars-Sinai, where his team investigates the microbes behind bloating, altered bowel habits, and irritable bowel syndrome—and turns those discoveries into better tests and treatments.

    He also co-authored Throne’s first validation study, accepted for presentation at ACG 2026, which found that Throne’s AI reads stool form as accurately as gastroenterologists.

  • Dr. Fola May

    Colorectal cancer prevention and health equity · UCLA

    Dr. Fola May

    Colorectal cancer prevention and health equity · UCLA

    Dr. Fola May is working to make lifesaving colorectal cancer screening reach more people. At UCLA, she leads research on improving access to high-quality digestive care and closing gaps in cancer prevention.

    She directs UCLA’s gastroenterology quality-improvement program and the May Health Services Research Laboratory, and serves as Associate Director of the UCLA Kaiser Permanente Center for Health Equity. Her work brings clinical medicine, public health, and patient advocacy together.

  • Dr. Aasma Shaukat

    Lead author, colorectal cancer screening guidelines · NYU Langone

    Dr. Aasma Shaukat

    Lead author, colorectal cancer screening guidelines · NYU Langone

    Dr. Aasma Shaukat helps shape how colorectal cancer is found early and prevented. She is the lead author of the American College of Gastroenterology’s 2021 colorectal cancer screening guidelines, which guide decisions about when and how people should be screened.

    As Director of Outcomes Research in gastroenterology at NYU Langone, she studies how to make screening more effective, improve colonoscopy quality, and turn research into better care for patients.

Research

Research & references.

New results

Our first validation study is in. Throne’s AI read stool form as accurately as five board-certified gastroenterologists, and the study was accepted for presentation at ACG 2026 in Nashville. More studies with research partners are under way, and we’ll share results as they’re cleared for publication.

Throne’s own research comes first. The other sources are background research that explains the measurements, their use, and their limits.

Throne research1

Shori C, Nowaski S, Rangarajan K, Capodilupo J, Blumberg T, Seminerio-Diehl J, Pimentel M. Evaluating the efficacy of an artificial intelligence–enabled toilet-mounted device for Bristol Stool Scale assessment. Accepted for presentation at the American College of Gastroenterology 2026 Annual Scientific Meeting, Nashville. See the results.

Bowel, food, and symptom diaries5
Stool form2
Urine concentration1
Urinary flow1

European Association of Urology: diagnostic evaluation of male lower urinary tract symptoms. See the uroflowmetry section; guidance checked September 2026.

Throne installed on a toilet in a sunlit spa bathroom

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