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Throne - Gut Health & Hydration Tracker
Stop guessing what’s happening with your gut.
Understand your everyday digestive and hydration patterns automatically with every flush. See which foods and habits tend to show up around your bad gut days.
Pay with HSA/FSA and save
Save up to 30% by using pre-tax HSA/FSA dollars for Throne, through our partner Truemed.
- Buy Throne as usualCheck out with any card. You don’t need your HSA/FSA card.
- Take a short Truemed surveyAn independent clinician reviews whether you qualify. It’s included with your purchase, at no extra cost.
- Get reimbursedIf you’re approved, Truemed sends a Letter of Medical Necessity. Submit it with your receipt to your HSA/FSA administrator. Most process claims within a few days.
Reimbursement decisions are made by your HSA or FSA administrator, not Throne. Full details
What you’ll see after every visit
Would you notice if your gut health started to slip? After every visit, Throne gives you a report card with your gut health and hydration scores, your stool’s consistency, color, volume and diameter, how often and when you go, and your urine concentration.
Each result is compared with your normal. Gut Health Coach connects the dots with what you log in your Journal, whether it’s a spicy meal, a stressful week, or a change in routine.
Will it fit my toilet?
Throne is designed for most standard residential white toilets with a rim thickness up to 2.25 inches, and works alongside many bidet setups. It clips on without tools or plumbing.
What does membership include?
Unlimited gut health and hydration tracking, your Journal, Gut Health Coach, data export, and tracking across multiple Throne devices, for $6/month per member. Cancel anytime.
Specs
- Battery
- ~30 days per charge
- Charging
- 13-foot USB-C cable (included)
- Toilet fit
- White toilets, rim up to 2.25" – most standard homes
- Sensors
- Downward-facing vision, acoustic, ambient light, motion
- Connectivity
- Bluetooth 5.1 · dual-band WiFi
- Works with
- iOS 16+ · Android 14+
What’s included
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Throne -
Charging cable
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Charging brick
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Quick start guide
As Seen In
What can Throne help you understand?
What agrees with me?
Explore connections between what you eat, how you live, and how your gut responds.
What’s changing?
See when your digestion, hydration, or bathroom habits shift.
What’s normal for me?
Learn your usual patterns so changes are easier to spot.
Am I actually hydrated?
Follow your hydration scores and see how they change over time.
Coach Insights
What’s moving your gut
Average gut health score change when logged
- Spicy food−19%Established signal · 11 logs
- Alcohol−11%Emerging signal · 8 logs
- Water+12%Established signal · 14 logs
- Exercise+9%Emerging signal · 9 logs
Trends · Last 60 days
Stool regularity
Journal: bloating logged on 6 days since
Week review · Key metrics
Your normal
Patterns unique to your body, built from your own history.
- Stool frequency1.6/dayWithin your normal
- Most common consistencyHealthyWithin your normal
- Pee sessions7.1/dayWithin your normal
- Average hydration58%Mild deviation
Hydration score
77%+7% vs. your normal
What members are saying.
Ian B., Throne member“I’ve had long-term mild GI issues and started working with a nutritionist who had me try a low-FODMAP diet. I came across Throne and thought it would be a good tool to help quantitatively track whether it’s working. And the good news is that it seems to be!”
Ray S., Throne member“I’m learning by what I eat and what this thing tells me, and I can kind of adjust things a little bit. It’s really helpful.”
Lauren & Renee, Biohacker Babes“Something I’ve learned already in one week of using Throne is that I get very dehydrated after I drink my coffee… I’m building a new habit so quickly that I wouldn’t be able to do from a lab test.”
Joy L., Throne member“I couldn’t tell you how hydrated I was. And so I find it very helpful to be reminded, hey, look, you’re down at 74, you want to chug up here because you need to drink.”
Shelby G., App Store review“I am deeply invested in my health, hydration, and how my body responds to what I eat, but like most people I was often just guessing when it came to what was actually going on with my gut. Throne completely changed that for me.”
Go like usual. Throne does the tracking.
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Clip it on.
Throne installs on the toilet rim in seconds. No tools, no plumbing.
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Throne knows it’s you, hands-free or with the push of a button.
The downward-facing sensor tracks each visit automatically. No samples, test strips, or logging. Throne’s AI is trained by practicing physicians.
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Get a report card after every flush.
See what happened and how it compares with your normal. Add context in your Journal, and Gut Health Coach connects the dots.
What you’ll see after every visit.
Tap through the Throne app: today’s report card, your last 30 days, and what Gut Health Coach has noticed.
Interactive demo · tap and scroll
Looser than your normal
Your stool was looser than your normal for the fourth day in a row, and your hydration has dipped all week. Loose stools can leave you more dehydrated, so aim to drink more water today.
Gut Health
Your gut health score reflects your recent stool consistency and stool frequency patterns.
41%
Stool consistency
- BSS-1
- BSS-2
- BSS-3
- BSS-4
- BSS-5
- BSS-6
- BSS-7
Additional stool metrics BETA
Hydration
Your hydration score is derived from urine color and concentration.
42%
Dehydrated
Average pee color
What changed this time?
Sharing what was different helps us understand what’s driving changes in your results.
- What changed this time?
- I was more rested or less stressed
- Something felt different, but I'm not sure what
Sep 21 - Oct 21
Digestive pattern
--Total Stools
Stool Regularity
Each slice is a stool, placed at the time of day it happened.
Stool frequency
--Average
Hydration score
--Average
Tap a bar or a day to see its numbers.
What's moving your gut
Signals your Coach has noticed between your daily life and your gut health, over the last 60 days.
Tap a factor to see its impact.
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Spicy food−14%
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Late, heavy dinners−11%
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Poor sleep−8%
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Extra water+5%
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Morning walks+7%
Factors we're still watching
We've heard these in conversation but haven't seen them often enough to identify a signal yet. Keep talking to your Coach.
- Coffee
- Dairy
- Travel
Gut Health
Your Gut Health Score is based on stool form and frequency over the past month, with greater emphasis on recent sessions.
Stool consistency
Stool Consistency uses the Bristol Stool Scale (BSS) to classify your stools into seven types based on form and texture. Types 3-4 typically indicate healthy digestion, while harder (Types 1-2) or looser stools (Types 5-7) can highlight changes in digestive patterns.
Additional stool metrics BETA
These additional metrics are generated by beta algorithms that will improve over time. We’ll continue adding new metrics as they become available.
Buoyancy
Whether most visible stool floated or sank shortly after entering the water.
Diameter
An estimate of stool width, shown as Small, Medium, or Large.
Volume
An optical estimate of the total amount of stool, shown as Small, Medium, or Large.
These metrics can help you notice patterns over time. They aren’t medical measurements.
Hydration
The Hydration Score reflects how well-hydrated you are, based on the color of your urine. It ranges from 0 to 100, with lower scores indicating more concentrated urine and higher scores indicating better hydration.
Urine osmolality measures how concentrated your pee is. Lighter urine means you’re well-hydrated, while darker urine signals dehydration.
Journal data isn’t scored
Your Gut Health Score is based only on your stool data.
Journal entries don’t change your score. The numbers below show how your score moves over time.
Throne tracks every visit automatically. Coach insights use what you log in your Journal.
What Throne measures.
Throne’s AI is trained by practicing physicians. Every visit adds to your history across four areas.
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Gut health patterns
- Stool color
- Estimated volume
- Stool form / Bristol scale
- Frequency
- Regularity / time of day
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Hydration
- Urine concentration
- Hydration score
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Bathroom habits
- Time on toilet
- Time to first evacuation
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Urinary flow
- Estimated flow-rate curve
- Peak flow / Qmax
- Average flow / Qavg
Throne’s acoustic sensor picks up the sound of urine hitting the water to measure flow rate for standing pees.
Your patterns. Your answers.
$6/month per member. Your membership turns your sensor’s data into a history you can learn from:
- Unlimited gut health and hydration tracking, with session reports and trends you can look back on
- Your Journal, for food, symptoms, and life context
- Gut Health Coach, which connects your digestive history with your Journal to surface patterns and next steps
- Tracking across multiple Throne devices, all in one account
- Your first 3 months are free for up to 2 people.
- After that, $6/month per person.
- Export your data.
- Share your Throne gut health and hydration data with your care team as CSV or an easy-to-read 90-day PDF summary.
- Sharing your Throne?
- Up to six people can share one device. Each person has a private account and their own membership.
- Cancel anytime.
The sensor faces down. Always.
It sees the bowl, nothing else. Your data is encrypted, and your health information is never shared without your permission.
Before you buy.
More questionsHow accurate is Throne?
In a validation study presented at the American College of Gastroenterology’s 2026 annual meeting, five board-certified gastroenterologists and Throne’s AI each classified the same 278 stool photos on the Bristol Stool Scale. None of the photos were used to train Throne’s AI.
The AI agreed with the doctors as closely as the doctors agreed with each other. On Type 4, the smooth, soft stool most people aim for, it matched the doctors’ consensus 90% of the time. Two doctors matched each other only 60% of the time. When the AI differed, it was usually by a single type.
Will it fit my toilet?
Throne is designed for most standard residential white toilets with a rim thickness up to 2.25 inches.
Can my partner or household use the same device?
Yes. Up to six people can share one Throne. Accounts and health data stay separate, and each person needs their own membership.
Does Throne detect blood?
No. Throne does not detect blood. If you notice blood in your stool or urine, talk to your doctor.
How often do I charge it?
About once a month, without removing it, using the included 13-foot USB-C cable.
Does it need Wi-Fi?
Yes. Throne syncs over Wi-Fi. If your connection drops, sessions sync when it returns.
Can I share my data with my doctor?
Yes. Export your history as CSV or an easy-to-read 90-day PDF summary, or show it in the app at your appointment.
Is Throne HSA/FSA eligible?
Yes. Save up to 30% by paying with eligible HSA/FSA funds through Truemed. Select Truemed at checkout.
Start understanding your gut.
Get Throne- 30-day money-back guarantee
- Free shipping
- 2-year warranty
- HSA/FSA eligible: save up to 30%