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

Dietitians and GI doctors use food, symptom, and bowel diaries to spot patterns. But entries get missed, and details fade.

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

Stool-form categories describe appearance. They are not a diagnosis.

How Throne records it

Throne uses images to classify stool form and color and estimate stool volume. Detected sessions provide frequency and timing. Missing or away-from-home sessions can leave gaps in the record.

How to interpret it

Compare several days with your own baseline and symptom notes. Stool form alone cannot diagnose IBS, IBD, inflammation, or a food intolerance. Color and volume also need context. Read the stool-form study.

Hydration

Urine concentration, estimated.

Osmolality describes the concentration of dissolved particles in a fluid. A laboratory measures it in a urine sample; Throne estimates it from optical urine-color analysis.

From urine color to an estimate

Drag the color

Estimated urine concentration

In between

  1. Optical urine-color signal
  2. Algorithmic estimate
  3. Estimated urine osmolality (mOsm/kg)

Urine concentration is one signal. This is not a direct laboratory measurement or a complete hydration assessment.

How Throne records it

The optical signal is an input to a model, not a direct laboratory assay. Estimated urine osmolality can help track urine-concentration trends across recorded visits.

How to interpret it

Urine concentration varies with fluid intake, time of day, diet, medicines, and kidney function. It is not a complete measure of whole-body hydration. Color can also be affected by pigments and the conditions in the bowl. Read research on urine color and osmolality.

Bathroom habits

Timing adds another dimension.

Time on toilet describes a whole session. Time to first evacuation describes the interval between the detected start of a seated session and the first detected evacuation.

Two intervals, one session

Drag through the session

Time to first evacuation

Time on toilet

Schematic only. Event spacing does not represent typical or recommended times.

How Throne records it

Throne derives these intervals from detected session events. A visit with no detected evacuation does not provide a time-to-first-evacuation value; it should not be read as an immediate evacuation.

How to interpret it

A shorter or longer interval may provide context for urgency or difficulty passing stool, but timing alone does not measure either symptom. Distraction, deliberate waiting, and missed events can change the result. Pair timing with your own symptom notes.

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

Illustrative 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

Illustrative curve, not a patient reading or a normal range. Qavg is voided volume divided by flow time.

How Throne records it

Throne uses acoustic analysis of standing sessions to estimate a flow-rate curve, Qmax, and Qavg. These are model-derived estimates, distinct from a clinical uroflowmeter’s measurements.

How to interpret it

Flow depends on the bladder, outlet resistance, voided volume, and testing conditions. A low peak cannot identify a prostate problem or distinguish obstruction from a weak bladder contraction. Repeated, representative voids and clinical context matter. Read the EAU guidance on uroflowmetry.

How to read the numbers

Three steps, with different kinds of uncertainty.

  • Measurement.

    The sensor records optical and acoustic signals and event timing. Whether a session or evacuation is detected affects the resulting record.

  • Estimation.

    Algorithms use those signals to classify stool form and color and estimate volume, urine osmolality, and urinary flow. An estimate can differ from a reference measurement.

  • Interpretation.

    Trends help you compare visits and add context to symptom and food notes. They do not establish a diagnosis or prove why a pattern changed.

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. 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.

  • 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.

In progress

Validation studies are in progress. Throne is working with researchers on validation studies. We’ll share formal results once they’re cleared for publication.

Background research, not Throne-specific validation. These sources explain the measurements, their use, and their limits.

Bowel, food, and symptom diaries5
Stool form1
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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