Developed by Grain Farmers of Ontario, CashCropper app was designed for users to easily compare fertility requirements and net profitability for altering crop rotations per field. This app is driven by an extensive database that has been created from more than 30 years of crop research by the University of Guelph. Default yield values come from Ontario insurance records for crops, and default production costs are provided by the Ontario Ministry of Agriculture. These values can be changed at any time to more effectively reflect the user’s specific operation. The values provided on this app are not guaranteed due to the many changing conditions of Mother Nature. This app is free to download and is available to iOS operating systems.