Features

Everything Stool Log does

Stool Log is a diary for your gut. Log a stool in a tap, keep symptoms, food, drinks and medicines alongside, and bring a clear record to your doctor. Here's everything it does.

The main features

A report for your doctorA free one-page PDF of your last 14 days: stools a week, hard and loose shares, the longest gap, red flags and each day's stools. Print it or share it. Log from your Home Screen in one tapStool Log's widgets log a stool, symptom, food, water or medicine in one tap, without opening the app, on your Home Screen, Lock Screen and Control Center. Log from your wrist with Apple WatchStool Log on Apple Watch logs a stool in two taps, plus symptoms, food, drinks, medicines and "I didn't go", with Siri and the Smart Stack. See which foods come before bad daysAfter about two weeks of logs, Stool Log's free Possible links shows which foods and drinks came more often before loose or hard stools or a symptom. Daily goals for fibre, water and habitsSet daily goals for fibre, meals, water, coffee and tea, alcohol, steps, sleep and toilet time, and tick them off on Today or from a widget. A toilet timer on your Lock ScreenTime how long you sit from the Lock Screen, Dynamic Island, a widget or Control Center. When you're done, the minutes go into your stool log. A diary for your child or a parentKeep a separate stool diary for a child or a parent you care for, each with its own calendar, insights and doctor report, on your iPhone.

Logging

Stools by Bristol type, from 1 (separate hard lumps) to 7 (watery), with colour, pain, urgency, straining, mucus, blood, minutes on the toilet, a note and a photo if you want one. See the Bristol stool chart.
Symptoms such as bloating, cramps, nausea, reflux and wind, with how strong: mild, moderate or severe. Add your own.
Food, with a photo if you like. Stool Log can suggest what's in the photo, worked out on your iPhone.
Drinks: water counted in glasses towards a goal, plus coffee, tea, alcohol, juice, milk and fizzy drinks.
Medicines, with a search of common gut medicines, and daily medicines with reminders and a Taken button.
"I didn't go" marks a day without a stool, so the report shows a day without a stool rather than a day you forgot.
Periods, if you choose to track them, to see how your stools change around them.
Earlier days: log anything for any past day and time.

Seeing your pattern

Today: your day as a timeline, with daily medicines still to take.
Calendar: by month, week or list, with each stool's type at a glance, and search.
Insights: stools a day, hard and loose shares, the longest gap, a day-by-day chart, your usual time of day, symptoms and colours.

Everywhere on your iPhone

Widgets on the Home Screen and Lock Screen, and Control Center buttons on iOS 18 or later.
Apple Watch, with Siri and the Smart Stack.
Siri and Shortcuts to open a log or start the toilet timer.
Reminders to log, only on days with nothing logged, with "I didn't go" right in the notification.

Privacy and control

No account. Your diary stays on your devices and in your own private iCloud, synced between your iPhone and iPad.
Face ID lock and Discreet mode, which keeps stool words out of notifications and widgets.
Apple Health, only what you turn on: water, five symptoms, hard and loose stools as Constipation and Diarrhea, and period days.
Export all data, free: every log as a spreadsheet, with your photos, in one file.
Delete all data removes everything from your devices and iCloud.

Stool Log at a glance

What it is: A private bowel movement diary (poop tracker) for iPhone, iPad and Apple Watch.
Logs: Stools by Bristol type (1 to 7) with colour, pain, urgency and notes; symptoms, food, drinks, medicines, periods, and days you didn't go.
For your doctor: A free PDF report of your last 14 days, to print or share. A CSV file of every log.
Price: Free to download and use. Stool Log Plus, an optional subscription or one-time purchase, adds the full doctor report, more daily goals and unlimited toilet timers. Logging always stays free.
Privacy: No account or sign-up. The diary stays on your devices and in your own private iCloud.
Devices: iPhone and iPad with iOS 17.6 or later, Apple Watch with watchOS 10 or later. Widgets, Lock Screen, Siri and Shortcuts.
Languages: English and 47 more languages.
Not a medical device: Stool Log is a diary. It doesn't diagnose or treat anything.

Free to download

No account needed. Logging, widgets, Apple Watch and the 14-day doctor report are free.

Get Stool Log on the App Store