Requires that a period be used as decimal separator for numeric values and that the period is chosen as the decimal separator in System Preferences(Language and Text). The MyRecipeCostMobile Application allows you to monitor the cost on all your recipes(products).  The application includes a standard set of ingredients.  The user has the ability to edit the included ingredients as well as add new ones.  First, the user enters or edits the quantity purchased in ounces, pounds, grams, kilograms, liters,gallons, liters, milliliters or each.  Next the user enters the total cost of the purchase.  The app will use the information entered to calculate the cost of all recipes which consume the ingredient. If the cost of the ingredient changes in the future, the ingredient can be edited to reflect the new cost.  A record will also be made of each change in an ingredient’s total cost or purchase quantity. The user can view all changes to an ingredient or all ingredients and print the results if required. When a ingredient changes all recipes using that ingredient are costed and the totals are placed in a recipe history file which the user can view. If a recipe changes ingredients or quantities of existing ingredients an entry is also place in the recipe history file.The ingredients, recipes, ingredient history and recipe history are permanently stored in a database on the Mac.  At any time, the user is able to review the total cost of all recipes utilizing the current cost of the ingredients in the system.   This tool will greatly enhance the speed at which you can calculate where costs lie, and ultimately assist with planning price and profit control.