MRTN Rate Calculator vs Crop Nutrient advisor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MRTN Rate Calculator
This utility calculates the optimal nitrogen fertilizer rate for crops based on agronomic research and current economic conditions. It provides a customized recommendation to maximize returns.
- Customized nitrogen rate recommendations
- Combines agronomic research
- Considers economic fluctuations
- Maximizes return on investment
Read full descriptionHide full description
The Maximum Return To Nitrogen (MRTN) calculations combine the agronomics of nitrogen rate research and the realities of economic fluctuations to provide a customized nitrogen rate.
Crop Nutrient advisor
Read full descriptionHide full description
Nutrient Technologies mobile app allows agricultural producers to instantly: ●Identify crop nutrient deficiencies ●Get product recommendations ●Check spray tank compatibility ●Download label and SDS ●And MORE! Growers, PCAs, or Plant Nutritionists can search for deficiency symptoms by crop to access images of visual symptoms. Got a better image? Upload a photo and add to our database. With a touch of a button, a list of products recommended to correct the deficiency or imbalance appears: with guaranteed analysis, suggested uses, benefits, and a compatibility statement. You can choose to download the complete product label and SDS for your records. New on this update is a crop nutrient sufficiency guide. Look up data by crop and tissue sample timing to know if you need to apply fertilizer and what kind. We have included a few reference guides to help you in the field: Mulder’s Chart shows antagonism and synergism of nutrients; a soil pH chart shows optimal range for plant nutrient uptake through the roots. We believe in agriculture. We develop products to help you unlock your crop’s full potential AND maximize your profits. Grow with us.
Screenshots
Verdict
The clearest difference is iOS requirement: MRTN Rate Calculator at 10.0 against Crop Nutrient advisor's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MRTN Rate Calculator ships an update every 5 months, Crop Nutrient advisor every 3 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.
| Parameter | MRTN Rate Calculator | Crop Nutrient advisor |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 57 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | University of Illinois | Nutrient Tech |
In-app purchases
MRTN Rate Calculator
No in-app purchases
Crop Nutrient advisor
No in-app purchases
Questions
Is MRTN Rate Calculator free?
Is Crop Nutrient advisor free?
Do MRTN Rate Calculator or Crop Nutrient advisor have ads?
Which is updated more often, MRTN Rate Calculator or Crop Nutrient advisor?
Other comparisons















