Apps and books for intolerances
Letzte Aktualisierung am 5. March 2026 von Dr. Michael Zechmann-Khreis
There are many apps and books on the subject of nutrition today. Especially for people with food intolerances –such as lactose intolerance, fructose intolerance, histamine intolerance or sorbitol intolerance – digital aids have become very important. There are now also numerous apps, symptom diaries and nutrition trackers for people with irritable bowel syndrome, chronic digestive complaints or non-specific food intolerances.
On this page we present the apps and books of the nmi portal. They are based on over 20 years of research and experience in the field of nutrition, digestion and food intolerances and help to better understand nutrition and recognize individual intolerances.
Own research for over 20 years
The nmi portal has been dealing scientifically with food intolerances and nutrition for digestive complaints for more than 20 years. Early on, we published food lists online for those affected. At that time, these were still simple tables or PDF lists.
Over time, this data was continuously expanded and scientifically analyzed. This initially resulted in an extensive database(nmidb.de) and finally, in 2018, our first app: “Ask Ingrid!”.
App: Ask Ingrid! – Food list for intolerances
“Ask Ingrid!” is an app for iOS and Android that allows people with food intolerances to quickly check whether a food is suitable for them.
n the app you can set your personal diet preferences, for example:
- Lactose free
- Fructose free
- Low histamine
- Sorbitol-free
- Combinations of several diets
The app then uses a traffic light system to show you whether a food is typically well tolerated, not well tolerated or problematic.
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The data behind “Ask Ingrid!” comes from years of research and from statistical evaluations of real experience data from those affected. Many factors are taken into account, such as
- Maturity of food
- Processing and preparation
- Usual consumption quantities
- Natural fluctuations in ingredients
In cooperation with the University of Innsbruck, a complex compatibility index was developed from this, which scientifically evaluates the data and translates it into an easily understandable traffic light system.
Community data: How do other people tolerate the food?
A special feature of “Ask Ingrid!” is the community rating.
Users can use the app to indicate how well they tolerated a particular food. This information is evaluated anonymously and made available to all other users.
This allows you to see how other people with the same intolerance combination have tolerated a food. Over 200,000 users have already submitted reviews – and new experiences are being added every day.
The app is available free of charge for iOS and Android and you can scan or query data twice a day. For those who want more, there are in-app purchases to unlock unlimited scans and queries.
App: Gutora – Classify nutrition scientifically
In addition to “Ask Ingrid!”, there is also Gutora another app from the nmi portal environment.
While “Ask Ingrid!” focuses primarily on food tolerance in the case of intolerances, Gutora helps to understand dietary patterns in the context of scientific recommendations. The app classifies nutrition based on current findings from nutritional science, public health and sustainability research.
These include, among others:
- Classification of dietary patterns, especially with regard to prediabetes, diabetes and butyrate diets
- Orientation towards scientific nutritional recommendations
- Analysis of eating habits over longer periods of time
App: Time2Sweat – interval training and exercise
Diet is only one part of a healthy lifestyle. Regular exercise is just as important.
The Time2Sweat app is a simple but powerful interval timer for sports and training. It is particularly suitable for forms of training such as:
- HIIT (High Intensity Interval Training)
- Circuit training
- Strength training
- Fitness workouts at home or in the studio
With Time2Sweat, you can define your own training intervals and workouts. The app then automatically guides you through your training and helps you to easily integrate exercise into your everyday life.