# NDSU Nitrogen Calculator vs Simplot by FarmQA

The clearest difference is iOS requirement: NDSU Nitrogen Calculator at 8.0 against Simplot by FarmQA's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NDSU Nitrogen Calculator ships an update fortnightly, Simplot by FarmQA every 2 weeks. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | NDSU Nitrogen Calculator | Simplot by FarmQA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Size | 34 MB | 35 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [North Dakota State University](https://appshunter.io/developer/493125863) | [FarmQA](https://appshunter.io/developer/1215865935) |

## What reviewers say

### NDSU Nitrogen Calculator

[App page](https://appshunter.io/ios/app/ndsu-nitrogen-calculator/id6444536816)

**In-app purchases:** none


### Simplot by FarmQA

[App page](https://appshunter.io/ios/app/simplot-by-farmqa/id6760032642)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NDSU Nitrogen Calculator free?

NDSU Nitrogen Calculator is free to download, with no in-app purchases.

### Is Simplot by FarmQA free?

Simplot by FarmQA is free to download, with no in-app purchases.

### Do NDSU Nitrogen Calculator or Simplot by FarmQA have ads?

Neither NDSU Nitrogen Calculator nor Simplot by FarmQA shows ads.

### Which is updated more often, NDSU Nitrogen Calculator or Simplot by FarmQA?

NDSU Nitrogen Calculator ships an update fortnightly, and Simplot by FarmQA every 2 weeks. Most recently, NDSU Nitrogen Calculator was updated on September 18, 2026 and Simplot by FarmQA on September 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*