Unfortunately iOS 8 introduced problems into Food Allergy Detective so it is not currently available for sale and we're not sure if/when it will be available for sale again. Stay tuned.

  • Think you might have a food allergy or sensitivity?
  • Don't have the time or energy to do an elimination diet?
  • Wish you had a smart food journal?
  • Want to know if there's really a connection between foods and symptoms?

Food Allergy Detective is on the case!

For less than the cost of a blank paper journal you can have an intelligent food journal that helps you discover hidden food allergies and sensitivities.

Easy to use

Food Allergy Detective doesn't require you to enter dates, times, food names, or amounts to make journal entries. All you do is check off foods or symptoms and tap Save. (You may enter a specific date and time if you like).

The Intelligent Food Journal

Discover hidden patterns

Food Allergy Detective then analyzes the data you've recorded to see if any patterns emerge and alerts you to potential problems using a simple red, yellow, green grading system. You can then view graphs to see the trends for yourself.

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Recommended in the book
iPhone 4S All-in-One For Dummies

Food Allergy Detective Can Help You Discover Your Food Sensitivities

Food Allergy Detective App Offers Clues
Food Allergy Assistant blog

Food Allergy Detective App Review
My Appinions

"What a great way to check for any sort of food sensitivities. This app is saving me from having to do an elimination diet. Thank you! Very customizable too."

"It's quite effective and very easy and fast to enter food or symptoms. I have tried similar apps and while generally well made they tend to be cumbersome to use. After setting my foods and symptoms, I can enter a meal in a handful of clicks. I'd guess my normal entry time is around 6 to 8 seconds. In social settings it looks as if I'm just getting a text or screening a call. It's about as unobtrusive as can be.

"Since I happen to have an iPhone, I rather insist I find a way to use it to track tricky dietary issues. So far I've purchased and used a couple of popular tracking apps. Each of them has been very sophisticated and detailed in the scope of information they can record and track, but ultimately did not compile the data in any way that I (or my Doc) can easily use. That, and it took some degree of effort to wind my way through various pages and entries. Food Allergy Detective, on the other hand, has been significantly easier and quicker to use, analyses are extensive and detailed, and the data can be exported via CSV file. Simple...and perfect!"
—Dakota Bill

Frequently Asked Questions

Do you plan to make a version for Android?

I've used the app for a week and it doesn't seem to work. How long do I have to use it?
Because the results are based on data the more data you can feed it, the better. Give it some time, use it regularly and you should see results. Even then, it's entirely possible that you do not have a food allergy or sensitivity and/or that the app doesn't see anything that it thinks is statistically significant.

How does the app know that a symptom is connected to a particular food?
It doesn't. The app simply tallies all symptoms experienced after each food that was eaten, so it is possible that it will connect the same symptom to multiple foods. However, with time and a good amount of data, certain distinct trends should emerge if there are any connections to be found.

My dairy symptoms have subsided. Why hasn't the grade improved?
The app only considers (counts) the times when a symptom occurs, so even though you may have eaten the food a hundred more times and been free of symptoms, the analysis is still only counting the times that a symptom occurred. If you want to reset tracking for a food you can always delete and re-add the food (or create a duplicate) and/or you can customize the dates that the analysis considers.

Why can't I enter food amounts or severity of a symptom, e.g. Stomach ache 1 to 5?
Because then the analysis moves from science to art. What does a "Level 3 Stomach ache" really mean? Is there a scientific consensus on what that means? No. Will two different people agree on what a "Level 3 Stomach ache" is? No. The app works on a strictly binary statistic: either a food caused a problem or it didn't. Period. It counts those occurrences and then looks for interesting peaks in the resulting graph.


Can I record medicines?
If you want to see if a medicine makes a difference, track foods without the medicine, start the medicine, then do an analysis with custom dates for the time after you started taking the medicine and see if there is any difference in the scoring.

How do I record a chronic symptom?
Since the app is looking at cause and effect, when possible you should record the onset of a particular symptom and not make repeated entries if the symptom is ongoing. If a symptom persists at all times then it will be difficult to determine a cause.

In the analysis why are symptom counts grouped into two-hour intervals?
This is to accommodate a degree of variability in digestion rates as well as to compensate for variations in when symptoms are recorded. There is a setting to switch it to one-hour intervals for finer analysis if you like.

What do the numbers on the graph mean?
The numbers on the left-hand side (vertical) are how many times the symptom was counted as occurring after each occurrence of the food. The numbers across the bottom (horizontal) are the time intervals after the food was eaten. For example, for a default six-hour analysis, the numbers across the bottom would be 2, 4, and 6, representing the intervals 0-2 hours, 2-4 hours, and 4-6 hours.

Will you make a version for the iPad?
We are hoping to release a universal app in the future.

Disclaimer: This software is for informational purposes only and may not be construed as medical advice. The information is not intended to replace medical advice offered by physicians or trained medical personnel. Always seek the advice of your physician or other qualified healthcare provider(s) when experiencing symptoms or health problems, or before starting any new treatment or diet plan.