Food allergies or intolerances?

ContentChecked is an app that will help users make better food choices for their food allergy and intolerance needs. When in the grocery store, users can scan a product barcode on a food or beverage product. The app will then tell the user whether or not that product is suitable for them based on their allergy settings, and will provide the user with similar alternatives if the product does contain one or more of their allergens.




In the United States approximately 90% of all individuals suffering from food allergies are allergic to one of these allergens. Food intolerance can usually, but not exclusively, be explained by a gastro-intestinal sensitivity (GI) or enzyme deficiency. Some of the most common intolerances involve lactose and gluten. Intolerances are not life-threatening. Our app currently provides options for 16 common allergies & intolerances.

Peanuts are technically legumes and not nuts. They grow underground and can cause a severe allergic reaction by being present with only trace amounts. A majority of reactions are due to eating peanuts. 

The allergenic proteins are found in the egg white and not the yolk. However, it is nearly impossible to effectively separate the yolk from the white. Symptoms of an egg allergy reaction can range from mild to severe.

The most common allergy among the US adult population is shellfish (crustacean) allergy. There are two kinds of shellfish: crustacean (such as shrimp, crab and lobster) and mollusks (such as clams, mussels, oysters and scallops). Reactions to crustacean shellfish tend to be particularly severe.

Soybean allergy is one of the more common food allergies, especially among babies and children. People with a soy allergy are not necessarily allergic to other legumes though. 

Tree nuts are not to be confused or grouped together with peanuts. These include walnuts, almonds, cashew, pistachio et al. However, despite having their own allergy, coconuts are not tree nuts. Traces of nuts can cause a severe allergic reaction.

Salmon, tuna and halibut are the most common kinds of finned fish to which people are allergic. More than half of all people who are allergic to one type of fish also are allergic to other fish, so allergists often advise their fish-allergic patients to avoid all fish.

Dairy allergies are most prevalent in children. Symptoms may include difficulty breathing, vomiting, hives and digestive problems. Lactose intolerance is often confused with dairy allergy. This intolerance is found more abundantly with adults, but is prevalent with children as well.

Wheat allergy is usually outgrown before reaching adulthood, often by age three. Symptoms of a wheat allergy reaction can range from mild to severe. Wheat allergy is different from Celiac disease and gluten intolerance.



In some cases people can experience life-threatening situations if exposed to an allergen. Some of the major eight allergies, such as wheat allergy and milk allergy, are commonly, but not always, outgrown in child hood. While fish and shellfish allergy usually develop later in life and are rarely outgrown.  About 10% of the population with food allergies react to less common allergens such as sesame, lupine, mustard or sulphites. In addition to The Big 8, these four allergens together with other common sensitive ingredients like mollusks and celery are choices in ContentChecked.



A majority of food-adverse reactions are a result of food intolerance. It has been defined as any reproducible, toxic response to food that does not involve the immune system. Food intolerance can usually, but not exclusively, be explained by a gastro-intestinal sensitivity (GI) or enzyme deficiency. Some of the most common intolerances are involve lactose and gluten. ContentChecked helps people with lactose or gluten intolerance to avoid products that can cause a reaction.

For more information visit Food Allergy Research & Education (FARE)


Traveling, hosting a party, going out on a date? Download your set of food allergy cards today! 

Food allergy BLOG


Please note that our apps are not responsible for any inconsistencies/discrepancies between the information provided by one of our apps and the product contents. If allergic or experiencing another form of dietary restriction, one should still read the product declaration before preparing food/taking our advice.