Coming soon to iPhone
Find out which foods actually bother you.
Gut Feeling is a food and symptom diary for IBS that you can talk to. Say what you ate, log how you felt, and it looks across weeks of your own days to tell you which foods keep showing up before the bad ones — and which ones you can stop avoiding.
Suspected triggers
An illustration of the trigger list — not one person's real results.
Does this sound familiar?
- You've kept a food diary before. You gave up somewhere around day nine.
- You cut out gluten, then dairy, then onions, and you're still not sure which one mattered.
- Some days are fine, some days aren't, and you can't see what separates them.
- You're avoiding a long list of foods, and you couldn't say which ones are actually earning their place on it.
- You'd like to bring something to your next appointment other than "it's been bad lately."
The pattern is usually there. It's just spread across weeks, tangled up with stress, sleep and portion size, and it's nearly impossible to hold in your head.
Say it, don't type it
Most food diaries die in week two, because logging a meal turns into filling in a form. Gut Feeling was built the other way round. There's a microphone on every screen, and one sentence can become a meal, a symptom and a note about your day all at once.
"I had a bagel and coffee about an hour ago."
Talk to it
"I had a bagel and coffee about an hour ago." It logs things at the time you say they happened — an hour ago is an hour ago, not now. You can type or tap instead, always.
Say how you felt
Bristol scale, pain, bloating, urgency, energy — plus the things that muddy the picture, like stress, sleep and alcohol. Two taps, whenever it hits.
See what connects
It reads your diary across weeks, allowing for how long after a meal symptoms actually turn up, and names the foods that keep appearing before your worst days.
It shows you what it heard, asks first when it had to assume something, and everything it writes can be undone.
Your triggers, ranked — and how sure it is about each one
Not a wall of charts for you to interpret. A plain-English readout: which foods show up before your bad days, how strong the pattern is, and what to test next.
- It says how sure it is, in words. Low, medium or high confidence, with the number of times it actually saw the pattern beside it — never a percentage dressed up as a fact.
- It says "we don't know yet" when that's the honest answer. A guess dressed up as a result is how people end up avoiding food for no reason.
- Safe foods too, by name. What you were eating during the stretches you felt fine. Shortening the avoid-list is the point.
- FODMAP stacking, broken down. Why a day went high when nothing on it looked high on its own — the load per subgroup, at meal, four-hour and whole-day scope.
- One page for your doctor or dietitian. A printable summary of your analysis window, with a denominator on every row and an honest note about what the analysis couldn't find.
Why a day goes high when no meal did
The day goes over your limit — and no single meal did.
Fructans Lactose Polyols Your daily limit
A guided low-FODMAP protocol, not just a diary
Watching your diary gives hunches. Testing one FODMAP group at a time, in a structured challenge, gives evidence. Gut Feeling does both, and it never lets the two look the same.
The protocol, end to end
Elimination
Two to six weeks with high-FODMAP foods out, to find out whether FODMAPs are part of your picture at all. It has an end date, and the app holds you to it.
Reintroduction
One group at a time, three escalating portions each, with a wash-out between them — read against the quiet baseline the first phase built.
Personalisation
The widest diet your own results justify. This is the phase the first two exist for, and the one most people never reach.
Roughly a quarter to a third of people get no benefit from low-FODMAP at all, and the app will say so rather than suggest trying harder. Stopping after elimination — staying restricted because it felt better — is the documented harm this diet actually causes, and the whole product is shaped around not doing that to you.
Built by someone who has IBS
I have IBS. Every piece of advice I was given came back to the same thing: keep a food diary. So I did — badly, in Notes, then a spreadsheet, then not at all. The logging was too much work to keep up with, and even when I managed it, reading weeks of it back and spotting anything real was harder still.
So Gut Feeling is the app I wanted: fast enough that logging a meal doesn't feel like admin, and honest enough to tell me when it hasn't found anything. Every decision in it — the microphone on every screen, confidence written in words, the refusal to let elimination become permanent — comes from being on the other side of this.
— Liam, founder
Your gut data is nobody else's business
- Built in Europe, under GDPR. A European product, built to GDPR from the start rather than retrofitted for it.
- We don't sell your data, and there's no ad business here. Gut Feeling is paid for by the people who use it.
- Yours to take, yours to delete. You can download everything we hold about you, whatever your subscription says, and deleting your account deletes the data with it.
- Voice is explained before you use it, not after. Recordings are sent to a speech-to-text provider to be turned into words. The app says so at the point you first tap the microphone, and the whole thing is a toggle you control.
- Nothing is shared without you pressing the button. Your doctor's summary goes to your doctor when you send it, and not before.
Frequently asked questions
When does Gut Feeling launch?
It's in private testing now and comes to the iPhone App Store first. Join the list above and you'll get one email the day it opens — that list is the only way to hear about it.
What will it cost?
There's a free tier that stays free: logging meals, symptoms and daily context by typing, tapping or photo with no limit; editing and deleting anything you've logged; the FODMAP reference lookup; the three-phase protocol and your challenges; your suspected triggers and safe foods by name; and every safety message. A monthly allowance of voice capture is included too.
Gut Feeling Plus adds unlimited voice capture, the evidence behind each trigger, the FODMAP stacking breakdown, a personalised "is this safe for me?" lookup and the doctor-visit summary. It's planned at $5.99 a month or $44.99 a year, with a free trial. Euro pricing is confirmed at launch.
Is this only for people with IBS?
It's built for people whose digestion is unpredictable, whether or not anyone has given that a name. If you have a diagnosed IBS subtype you can set it, and it changes how symptoms are scored — for IBS-C a loose stool can be relief rather than a symptom, and for IBS-D it's the symptom. "I'm not sure yet" is a real answer, and the app scores neutrally until you know.
Do I have to do an elimination diet to use it?
No. You can eat normally and just log it — the pattern-finding works on your ordinary days. The guided low-FODMAP protocol is there when you want it, and it's opt-in.
How long before it tells me anything useful?
Patterns generally need two to three weeks of consistent logging before there's anything worth trusting. Until then the app says so plainly instead of showing you a confident-looking answer built on four days of data.
What is the low-FODMAP diet?
FODMAPs are a group of carbohydrates that are poorly absorbed in the small intestine and can trigger symptoms in people with IBS. The low-FODMAP approach has three phases: remove high-FODMAP foods for two to six weeks, reintroduce each subgroup one at a time in escalating doses, then build a personalised long-term diet from what you turned out to tolerate.
It is not meant to be followed permanently. The restriction phase is a diagnostic step, not the destination.
Can I share it with my doctor or dietitian?
Yes. Gut Feeling produces a printable summary of your analysis window — the symptom picture with a denominator on every row, anything it flagged as worth a doctor's attention, and an honest statement of what the analysis could not find. You choose when to send it.
Is Gut Feeling a medical device, or a diagnosis tool?
No. It's a food and symptom diary for general wellbeing. It doesn't diagnose anything, and some of what you might log is worth a GP rather than an app — when that happens it says so plainly, and it stops the diet rather than helping you continue it.
Which devices does it support?
iPhone first. Android is on the roadmap but has no date yet — the list above is where that would be announced.
Ready to stop guessing?
Join the list and you'll hear from us once — when there's something to try.