The Food Substitutes app is a simple app for cooks who may not have an ingredient for a recipe and need to substitute it with something else they might have in their kitchen.
The current features of the app are as follows:
"-Search by food or browse by category. The alphabetical food list can be scrolled through, or use the search bar at the top to find your food fast.
-Along with the substitute possibilities for your food, there is also a Food Details tab that gives you background info for that food as well as possible tips, hints, nutritional info, or practical experience from our kitchen and research.
-Some of the food substitutes are marked as “healthier” to give you an idea of how to cut some calories, fat, or other harmful substances from your diet.
-The Favorites tool allows you to make your own custom list of foods that you might want for the future. It’s as easy as touching the star on the right side of the food heading bar. Once you’ve marked your favorites, you can access them from the homepage.
-Our food substitute database is continually growing! With the Submit Ideas tool you can send in some of your favorite substitutes or make requests for the food subs you need."
Taken from here