Best gut health apps in 2026, by what you want one to do
Updated 12 November 2026. Written by the Ojafi team from the sources listed below. How we write guides
There is no single best gut health app, because they do different jobs. ZOE gives nutrition feedback on your meals. Monash FODMAP Diet is the reference for the low FODMAP diet. Nerva is a gut-brain programme for people with IBS. mySymptoms and Bowelle are food and symptom diaries. Cronometer counts nutrients. Ojafi plans meals around how your own meals sit. Choose by the job first.
At a glance
| App | The job it does | App Store rating | Price |
|---|---|---|---|
| ZOE: Personalized Nutrition | Photo meal tracking with nutrition feedback and personalised food advice | 4.8 from 27,408 ratings | Free to download |
| Monash FODMAP Diet | The food guide for the low FODMAP diet, from the university that developed it | 4.1 from 460 ratings | £7.99 |
| Nerva: Gut-Brain Program | A gut-brain programme of daily sessions for people with IBS | 4.5 from 4,206 ratings | Free to download |
| mySymptoms Food Diary | A diary that looks for links between food, drink, daily factors and symptoms | 4.6 from 815 ratings | Free to download, 7-day trial, then a subscription |
| Bowelle | A quick food and symptom diary with charts | 4.7 from 942 ratings | Free to download |
| Cronometer | Counting calories, macros and more than 95 vitamins and minerals | 4.7 from 7,081 ratings | Free to download |
| Ojafi | Meal planning, with a journal of how each meal sat | Not yet rated | Free to start, paid membership |
Choose by the job
- You want feedback on what is on your plate: ZOE.
- A GP or dietitian has suggested low FODMAP: Monash FODMAP Diet.
- You have IBS and food changes alone have not settled it: Nerva.
- You want to find which foods come before your symptoms: mySymptoms or Bowelle.
- You want to know your fibre and nutrient intake in numbers: Cronometer.
- You want next week's meals planned around what sits well with you: Ojafi.
The usual mistake is to pick the highest-rated app and then find it does a different job. A reference app will not keep a diary for you, and a diary will not tell you what a food contains.
ZOE
ZOE's listing describes snapping a photo of a meal to get nutrition feedback, tracking meals and getting personalised food advice, informed by its own nutrition research. It has by far the most ratings of the apps here. The pick if you want a general view of how well you are eating, not a symptom tracker.
Monash FODMAP Diet
Made by the Monash University researchers who developed the low FODMAP diet, with a food guide to which foods are high and low in FODMAPs. It is the only paid download here. The pick if you are doing low FODMAP properly, which the NHS says should be with a dietitian's help. Our guide to whether to try low FODMAP covers the stages.
Nerva
Nerva's listing describes a personalised gut-brain programme, with daily sessions, practical tools and structured guidance, for people living with IBS and related gut-brain conditions. It works on the gut-brain link, not on your food. The pick if food changes have not been enough.
mySymptoms and Bowelle
Both are food and symptom diaries. mySymptoms logs food, drink and daily factors and shows which are associated with your symptoms; its listing says it has been used by more than 1.2 million people since 2010. Bowelle is built to be quick, with charts of how you feel over time. We compare diaries in more detail in mySymptoms alternatives.
Cronometer
A calorie and nutrient tracker built for accuracy, covering macros and more than 95 vitamins and minerals. It does not track symptoms. The pick if your question is how much fibre or how many nutrients you actually eat.
Ojafi
Ojafi is our app, so weigh this accordingly. It is a meal planner with a food and feeling journal. You record a meal by photo, voice, barcode or text, then answer one short question about how it sat: bloating, energy or fullness. It plans meals around what you find, with recipes, cooking steps and a grocery list. It works in a browser and on iPhone, and it is free to start.
What a gut health app cannot do
The NHS advice for bloating and IBS starts with plain things: regular meals, eating slowly, enough fluid, and a diary of what you eat and any symptoms. An app can make the diary easier to keep and the pattern easier to see. It cannot test you for anything.
Questions people also ask
- What is the best free gut health app?
- ZOE, Nerva, mySymptoms, Bowelle and Cronometer are all free to download, and several then offer a subscription. Ojafi is free to start. Monash FODMAP Diet is a one-off £7.99. Which is best depends on the job you want done.
- Do gut health apps actually work?
- A diary app works to the extent that you keep the diary: the NHS suggests recording what you eat and your symptoms to see if any foods trigger them. No app replaces a GP for symptoms that keep coming back.
- Is there a gut health app that does not involve cutting out foods?
- Nerva works on the gut-brain link, and Ojafi plans meals around what already sits well with you. Neither starts from an elimination diet.
One size fits nobody.
Ojafi starts from your tastes, your routine and how food sits with you. Free to start, no card needed.
Get startedSources
- ZOE on the App Store
- Monash FODMAP Diet on the App Store
- Nerva on the App Store
- mySymptoms Food Diary on the App Store
- Bowelle on the App Store
- Cronometer on the App Store
- Ojafi on the App Store
- NHS: Bloating
- NHS: IBS diet, lifestyle and medicines
Ojafi gives general food guidance. It is not medical advice and does not diagnose or treat any condition. See our medical disclaimer.