The Best IBS Apps in 2026: An Honest UK Comparison

Search the App Store for “IBS” and you'll find dozens of apps that look similar at first glance. In practice they do quite different jobs. Some are food guides, some are diaries, one is a therapy programme, and some are general nutrition apps. The best one for you depends on what you're trying to do.

We make one of these apps, GutBox, so we've tried to be fair. All prices and details below come from each app's own App Store listing as of 1 November 2026, using UK prices. Prices change, so check the listing before you buy.

At a glance

Monash FODMAP Diet

What it's for: this is the official app from the Monash University team that developed the low FODMAP diet. Its core is a food guide that rates hundreds of foods with a traffic light system, based on Monash's own lab testing. It also lists branded products certified as low FODMAP, has over 70 recipes, and includes a diary that guides you through the reintroduction step of the diet.

Price: £7.99 to download, with no in-app purchases listed.

Who it suits: anyone doing the low FODMAP diet, ideally with a dietitian. If you're following the diet, this is the one to get. It's less suited to tracking symptoms you haven't yet linked to FODMAPs. Our guide to the low FODMAP diet explains how the three phases work.

Bowelle

What it's for: Bowelle describes itself as the quickest, easiest food and symptom diary on the App Store. You can log how you feel, what you eat, water, stress, bowel movements, notes and your own custom fields, then view charts that overlap different types of data. You can export your history by email to share with a doctor, nutritionist or dietitian, and it connects to Apple Health.

Price: free to download, with Bowelle Premium in-app purchases listed between £2.49 and £13.99.

Who it suits: people who want a clean, fast diary and are happy to spot patterns themselves from the charts. It's well reviewed, with a 4.7 rating from over 900 UK ratings.

Nerva

What it's for: Nerva is different from everything else here. It isn't a diary or a food guide. It's a structured gut-brain programme with daily 15-minute sessions, built on gut-directed hypnotherapy. It was developed by Dr Simone Peters, a Monash University researcher, with the company Mindset Health. Monash research has found that gut-directed hypnotherapy can reduce IBS symptoms.

Price: a 7-day free trial, then a subscription. UK listing prices include £72.90 a month or £109 for three months.

Who it suits: people who have tried diet changes and still have symptoms, or who suspect stress plays a big part. In the UK, NICE recommends considering hypnotherapy for IBS that hasn't responded to medicines, so it's a credible option to discuss with your GP. It's the most expensive app here.

ZOE

What it's for: ZOE is a general nutrition app rather than an IBS tool. You snap a photo of a meal and get food and meal scores, a processed food risk rating, a plant counter and an AI nutrition coach. It's backed by ZOE's large nutrition research programme.

Price: free to download, with in-app purchases.

Who it suits: people who want to eat more healthily in general. It has a huge following, with over 27,000 UK ratings. It isn't designed around IBS symptoms or bowel movements, so it's less useful for finding gut triggers.

mySymptoms Food Diary

What it's for: mySymptoms has been around since 2010 and is one of the most established food and symptom diaries. You log food (from a database of over a million foods, by barcode or from your frequent items), symptoms, sleep, stress, medication, exercise and bowel movements on the Bristol scale. After about 28 days, its Insights look for foods and factors associated with your symptoms, with a confidence level for each result.

Price: a 7-day free trial, then £7.99 a month, £29.99 for six months or £49.99 a year.

Who it suits: people who want a detailed, thorough diary and don't mind spending a little longer on each entry. It has a long track record and a 4.6 rating from over 800 UK ratings.

Cara Care

What it's for: Cara Care was a popular IBS tracker that combined a diary with a 12-week low FODMAP programme and chat with a dietitian.

The catch: as of November 2026 it isn't available on the UK App Store, and its US listing shows the iOS app was last updated in October 2020. We wouldn't recommend starting with an app that hasn't been updated in six years.

GutBox

What it's for: GutBox is our app. It's built to make daily logging fast enough that you keep it up. You can log meals from a photo, your voice or a barcode, and do a quick “gut check” with the Bristol Stool Chart and symptoms like bloating, pain and urgency. Each day you get a Gut Score along with fibre and ultra-processed food counts, and a weekly review. Over time it looks for foods that line up with your symptoms and names them as worth testing. A Gut report PDF lets you share your logs with a dietitian or nutritionist. It's on iPhone and Android, in 21 languages.

Price: free to download. Free includes unlimited logging, today's scores, your last two weeks of insights and a two-week gut report. GutBox Premium (£7.99 a month or £39.99 a year in the UK) adds longer trends and reports, unlimited photo scans and every pattern GutBox finds.

Its limits: GutBox is new. It launched in October 2026 and has only a handful of App Store ratings so far, so it doesn't have the track record of mySymptoms or Bowelle. It isn't a lab-tested FODMAP guide like Monash, and it isn't a therapy programme like Nerva. It can point to patterns in your logs, but it can't diagnose anything or tell you what's causing your symptoms.

Who it suits: people who want to find their own triggers with as little effort as possible, and anyone who wants a clear report to take to a dietitian.

How to choose

These apps aren't mutually exclusive. A common combination is a diary app for day-to-day logging plus the Monash app as a reference if you're doing the low FODMAP diet. A few questions can help:

• Do you know what you're looking for? If you don't know your triggers yet, start with a diary. The NHS recommends keeping a diary of what you eat and any symptoms you get. Our guide to keeping a food and symptom diary explains what to record.
• Will you actually keep it up? The app you open every day beats the most powerful app you abandon after a week. Try the free versions first.
• Are you working with a dietitian? Ask what they prefer. Many will want an export or report they can read quickly.
• Have diet changes already been tried? If so, a gut-brain approach like Nerva may be a better next step than another diary.