A bowel and gut-health diary that stays on your phone. Log in one tap, see how this week compares with your usual, and take a clear report to your doctor.

Download on the App Store

iPhone and iPad · Free, with optional Turnal Plus

In the app

  • The Log screen. It asks 'How was it?' and shows the seven types of the Bristol Stool Scale, from very firm to liquid, plus 'Went, but nothing happened'.

    One tap. Logged.

  • The Insights screen. A weekly card shows 7 of 7 days logged, then the usual pattern: once a day, usually between 12:30 and 19:15, most often Type 4.

    Your usual, not anyone else’s.

  • The report for your doctor. A PDF of the last 2 weeks, 4 weeks, 3 months or everything: a summary, your stool types, the days at a glance, then every entry.

    A clear report for your doctor. Turnal Plus

Free to use

One tap to log

Tap the closest match on the Bristol Stool Scale. Add detail if you want to, and skip it if you don’t.

Home and Lock Screen widgets

Log without opening the app, or from the Lock Screen without unlocking your phone.

Your usual range

Insights compare this week with your own usual, and a weekly recap sums it up for you to keep or share.

A diary calendar

Every day you logged, with a list of your recent entries.

Three tones

Light, Balanced or Clinical. Change it any time.

Backup and export

Save a backup file, restore it, or export everything as a spreadsheet, all from your phone.

Private by design

No account

There is nothing to sign up for and no password to lose.

No server

Your diary is written to your phone and never sent anywhere, so nobody else can read it, including us.

Works offline

The app connects to Apple’s App Store only when you buy or restore Turnal Plus. No advertising, no analytics, no tracking.

In full

The privacy notice lists the few things that do reach us, such as an email you send.

Turnal Plus

The report for your doctor: a clear PDF of any period, as often as you need it.

Your full history in the Diary. Without Plus, the Diary shows the last 30 days. Older entries are kept on your phone and are always in your exports.

Plus is a monthly or yearly subscription, with a free week on the yearly plan, or a one-off lifetime purchase. Need just one report? You can buy a single report instead. The app shows every price before you pay.

Not medical advice

Turnal is a record-keeping tool. It does not diagnose conditions and is not a substitute for medical advice. If you’re worried about a symptom, contact your doctor. In an emergency, call your local emergency number.