PooDooThe poop tracker that makes gut health simple
Log every bathroom trip in seconds, get a science-backed Digestive Health Score and finally understand what your gut is telling you. No shame, just a friendly poo with good advice.
Free to download. PooDoo Pro is optional.
9.5 / 10Excellent day
Type 4Logged today
Your gut is talking. PooDoo translates.
Bloating after lunch, three days without going, then a rush. Is that normal? Most of us never ask, because who wants to talk about poop?
- Not sure what "normal" looks likeSee where you are on the Bristol scale in one tap.
- Bloating and heaviness that come and goSpot the days, foods and habits that line up with them.
- Irregular rhythmSee how often and how regularly you really go.
- Worried about a colourPooDoo flags warning signs and says when it is worth calling a doctor.
Three taps to a clearer gut
Log in seconds
Pick the shape, the colour and how it went. Had no bowel movement? Log gas and how your belly feels instead.
Get your score
PooDoo turns each entry into a Digestive Health Score from 0 to 10, with a plain-English explanation of what it means.
Spot the pattern
Weekly and monthly analytics show how food, water, stress and sleep line up with your digestion.
Your gut, in one face
Every log ends with a score and a mascot mood, so you can read your day at a glance.
Your digestion is working at its best.
Small blips, often diet or stress.
Signs of imbalance. Water and fibre help.
A clear disruption. Worth watching closely.
Everything your gut wants you to know
Bristol Stool Scale
All 7 types with pictures, so you never have to guess which one you just saw.
Colour & warning signs
Black, red or pale stool gets flagged right away with a clear "see a doctor" note.
Gas & belly feel
No bowel movement today? Track gas, odour and bloating so the picture stays complete.
Analytics
3-day, weekly and monthly scores from 15 to 100 that weigh quality, frequency and regularity.
Gentle reminders
"Poop check?" A friendly nudge at the time you choose. No pressure, no spam.
Your own companion
Name your mascot. Professor Plop, Baron von Brown or Lil' Nugget will keep you company.
Know the why, not just the what
Pro explains every result in plain words and tells you what to do over the next 24 hours.
What this means
A simple explanation of today's result.
How did this happen?
The factors most likely behind today's score.
Your next 24 hours
A short food and drink plan to get back on track.
What to avoid
Possible triggers to cut back on for now.
Full history
Every chart, every period, all your trends.
Ask PooDoo
AI answers to your questions about your own logs.
Start Pro from inside the app. Cancel any time in your store settings.
Actually science-backed
Your score is built on the Bristol Stool Form Scale (Lewis & Heaton, 1997), transit-time research (Saad et al., 2010) and the World Gastroenterology Organisation guidelines. Stool colour rules follow clinical guidance on bile and bleeding.
- Every rule and point deduction is published
- 10 cited sources from PubMed, AGA and Mayo Clinic
- Red flags are never softened or joked about
The Bristol Stool Scale
Tap a type to see what it means for your digestion and what helps.
Type 1Hard lumps
Type 2Lumpy sausage
Type 3Cracked sausage
Type 4Smooth sausage
Type 5Soft blobs
Type 6Mushy, ragged
Type 7Watery
Want the full picture? Read Bristol stool chart: a friendly guide to all 7 types in the PooDoo library.
Whatever brought you here
Less bloating
Ease heaviness, gas and discomfort by finding your triggers.
Regular rhythm
Move from "whenever" to a steady, comfortable routine.
Better habits
See how water, fibre, sleep and stress really affect you.
Peace of mind
Notice changes early and bring real data to your doctor.
Questions, answered
What is the Bristol Stool Scale?
The Bristol Stool Scale (Bristol Stool Form Scale) sorts stool into 7 types, from hard separate lumps to fully liquid. It was developed by Lewis and Heaton in 1997. Types 3 and 4 are the healthy range, and PooDoo uses the scale as the foundation of its Digestive Health Score. See the full Bristol Stool Chart.
Is PooDoo free?
Yes. PooDoo is free to download on the App Store and Google Play, and logging, the Bristol Stool Scale and your daily score are included. PooDoo Pro is an optional subscription that adds deeper explanations, causes, food guidance, full analytics and AI assistant answers.
How is the Digestive Health Score calculated?
Every entry starts at 10 points. Points come off for stool form outside Types 3 and 4, warning colours, pain or incomplete emptying, strong odour and belly discomfort. Over a period, PooDoo also looks at how often and how regularly you go and turns this into a score from 15 to 100. The methodology page lists every rule and source.
Is my health data private?
Your logs are sent over encrypted connections and used only to generate your personal insights. The Privacy Policy explains what is collected and how to delete it.
Does PooDoo replace a doctor?
No. PooDoo is an educational self-tracking tool, not a medical device. It does flag warning signs like black, red or pale stool so you know when to talk to a doctor, and a few weeks of logs are a useful thing to show at an appointment.
Which languages and devices does PooDoo support?
PooDoo works on iPhone and Android phones and is available in English, German, French, Japanese, Russian and Ukrainian.
Ready to make poo great again?
Download PooDoo free and get your first Digestive Health Score today.