Supports iPad
Thanks for the update! Works great now. I really like the ability to email the report (also in the N Price Calculator). This is the first Ag based calculator type app that I seen that feature. Good idea and it works as advertised.
Archived App (Last seen on 6 Aug 2025)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This utility helps farmers determine the optimal nitrogen fertilizer rate for corn to maximize profitability based on current nitrogen and corn prices. It calculates the Maximum Return to Nitrogen (MRTN) rate and provides a range of profitable application amounts.
✓Calculates Maximum Return to Nitrogen (MRTN) rate
✓Adjusts for fluctuating N and corn prices
✓Provides a range of profitable N rates
✓Assists in selecting optimal fertilizer application
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What's New in Corn N Rate Calculator
2.12
November 18, 2022
User interface updates for iOS 16
User reviews
Developer apps
FAQ
What is the Corn N Rate Calculator?
The Corn N Rate Calculator is a free utility app designed to help corn producers determine the most profitable nitrogen fertilizer rate based on current nitrogen and corn prices. It calculates the Maximum Return to Nitrogen (MRTN) rate.
How does Corn N Rate Calculator help with profitability?
By calculating the MRTN rate, the app identifies the nitrogen application amount that yields the highest profit for a given price ratio of nitrogen to corn. It also shows a range of rates that are nearly as profitable.
Does Corn N Rate Calculator have ads?
No, the Corn N Rate Calculator is ad-free. It is a free utility application with no advertisements present.
What devices is Corn N Rate Calculator available on?
Corn N Rate Calculator is available for iPhone and iPad devices. It is designed for iOS users.
How often is Corn N Rate Calculator updated?
The latest version of Corn N Rate Calculator is 2.12, which was last updated on November 18, 2022. This indicates a relatively infrequent update cycle.
What is the age rating for Corn N Rate Calculator?
Corn N Rate Calculator has an age rating of 4+. This means it is suitable for users of all ages.
Who developed Corn N Rate Calculator?
Corn N Rate Calculator was developed by the UW-Madison Integrated Pest Management program, an organization focused on agricultural research and extension.
What is the user rating for Corn N Rate Calculator?
Corn N Rate Calculator has a perfect rating of 5.0 stars based on 1 review. This suggests a highly positive user experience from its limited feedback.