For women who’ve been told it’s just stress

Meet Tummi. Your gut longevity assistant

Start your program See how it works
  • Your symptoms, taken seriously
  • Results in plain language
  • Backed by gut experts
A woman smiling at her phone while checking in with the Tummi app
Your advisor, step by step

Meet Tummi, step by step

01 · Meet

Meet Tummi, your personal gut health advisor

A calm, credible companion that finally helps your gut make sense, in language you understand. Tap Start app demo to try it yourself.

02 · Track

Track what your body is telling you

No daily diary. Just log the meals that stood out and how they fell. Your wearable adds movement, sleep and stress on its own.

03 · Learn

Tummi learns what works for you

Short, evidence-based lessons, plus the patterns Tummi quietly spots in your own days.

04 · Tips

Personal tips, made just for you

Small, doable ideas for food, movement, sleep and stress. Each one reviewed by gut health experts.

05 · Scan

Scan any product or menu

In the shop or at a restaurant, point Tummi at your options and see the best choice for your gut in seconds.

06 · Everywhere

Tummi in your own AI tool

Take your gut profile into Claude, ChatGPT or Gemini, so your favourite AI thinks along with everything Tummi knows about you.

Tummi, your gut companion
Your gut, gently understood
Meet Tummi
Then scroll, or tap around freely
Live · interactive demo
What you get back

A preview of your gut profile

No wall of numbers. Just one calm overview of where you stand, in plain language, always with the source.

Gut profile Example
In balance Calm trend
  • DiversityGood
  • InflammationMild
Source · Lancet Gastro 2025
Why women trust Tummi

What we stand on

No scores, no streaks, no miracle cures. Three things you can count on, in everything we show you.

Heard

We start by believing you. Your symptoms are real and worth taking seriously, not “probably just stress.”

Evidence-based

Every insight is tied to what science does and doesn’t yet show. We’re honest about what we can’t say.

Usable

Your results become plain language and realistic next steps. Not a PDF you have to figure out on your own.

Get to know your gut

Stories that bring calm

Five things women with gut complaints run into most. Open a card to read more.

Woman resting her hands calmly on her stomach Gut health
Dr. Lieke VermeerGut researcher

Understand your gut, finally calm

Insight

From symptoms to calm

Your gut test is translated into plain language and a plan that fits you. No loose values, just clarity.

Read more
Woman with a hand resting calmly on her chest Women
Sanne MulderDietitian, women & gut

Gut complaints in women

Hormones & cycle

Your gut moves with your cycle

Bloating around your period or in menopause is no coincidence. We look at the whole picture.

Read more
Woman meditating calmly in soft light Stress & gut
Dr. Roos JansenGut-brain research

What stress does to your gut

Gut-brain axis

Your gut and your mind talk to each other

Tension often lands literally in your belly. Calm, proven steps help you break that vicious circle.

Read more
Woman with a cup of tea in a calm moment Nutrition
Emma BakkerNutrition scientist

Food your gut loves

Nutrition

Not eating less, but smarter

We translate your profile into doable choices for this week. No strict diet, just a calmer gut.

Read more
Woman doing calm yoga at sunset Bloating
Tessa PetersLifestyle coach

From bloated to in balance

In balance

A belly that feels calm again

Small, sustainable habits bring you step by step toward a lighter, calmer feeling.

Read more
How it works

In three calm steps

From your first check-in to a plan that fits your body. At your own pace, with nothing to figure out yourself.

Download Tummi

Get the app and start your gut program. Tell Tummi how your belly feels in a few taps. No forms, no jargon, no rush.

See your patterns

Tummi turns your daily check-ins and meals into plain language. No confusing reports, just a calm overview with honest evidence labels.

Follow your plan

You get an evidence-based plan you can actually follow this week. Food, rhythm and small steps, built up at your own pace.

Why Tummi

Not another quick fix

You’ve probably tried the diets, the detoxes and the apps that turn your body into a score. This is what we do differently.

Quick-fix programs

  • Not included: Promise a reset in seven days
  • Not included: One strict protocol for every body
  • Not included: Sell supplements before they listen
  • Not included: Gone when it doesn’t work

Tummi

  • Included: A calm program at your own pace, built to last
  • Included: Shaped by your patterns, your cycle and your life
  • Included: Honest about what science can and can’t say yet
  • Included: Designed with gut experts, not influencers

Generic trackers

  • Not included: Log everything, explain nothing
  • Not included: Charts without context or next steps
  • Not included: Blind to what women’s bodies do differently
  • Not included: Your data stays locked in
Science and honesty

We show our evidence, always

Every insight in Tummi carries a label that tells you how strong the science behind it is. When the evidence is thin, we say so.

strong evidence

Replicated in multiple human studies. We build advice on this.

moderate evidence

Promising, but the research is still young. We mention it carefully.

limited evidence

Early signals only. We never base your plan on this alone.

From your profile · example
“Your bloating seems to flare after high-lactose days. This can fit a lactose sensitivity, and it is worth testing calmly.”
strong evidence Lancet Gastro, 2025

“Seems to”, “can fit”: that wording is on purpose. Your body is not a math problem, and we won’t pretend it is.

Pricing

Start calm, upgrade when you’re ready

Begin for free and take your time. Upgrade when you want Tummi to go deeper with you. Cancel whenever you like.

Start €0 free, for as long as you like
  • Track meals and how they fell
  • The learn library, always open
  • Five product scans per month
  • Your data stays yours, export anytime
Start free
Plus €9 per month
  • Everything in Start
  • Unlimited scanning, in shops and at menus
  • Personal patterns from your check-ins
  • Take your gut profile to your own AI
  • Wearable sync for sleep and stress
Start your program
Plus & experts €29 per month
  • Everything in Plus
  • A quarterly review by a gut dietitian
  • Questions answered by humans, with care
  • A plan tuned to test results you bring
Talk to a dietitian

Educational, not a diagnosis · Cancel anytime · GDPR-compliant

Questions, answered calmly

No. Tummi is educational. We help you see patterns and start a better conversation with your doctor or dietitian, we never replace them. Alarm symptoms always route you to your GP first.
We can’t promise that, and we won’t. What we can do is help you see what your days are telling you, with honest evidence labels on every insight. For many women that clarity alone is the first calm step.
It stays yours. Tummi is GDPR-compliant, your data lives on EU servers, and you can export or delete everything at any moment. We never sell it, to anyone.
No. A wearable adds sleep and stress context on its own, but you can enter how you slept in two taps. Tummi works at whatever level of detail feels right for you.
Yes. Plans are monthly, cancelling takes two taps, and you keep access to your own data afterwards. Gut healing is slow, your subscription shouldn’t trap you while you take your time.

Start today

Ready to understand your gut?

Download Tummi and start a calm, personal program that turns what your gut is telling you into clear steps for this week. No more guessing. No more being brushed off.

Start your program See how it works

Educational, not a diagnosis · Backed by experts · GDPR-compliant