# PhD em Soja vs 4 Farm

The clearest difference is review sentiment: PhD em Soja at 100% against 4 Farm's 67%. PhD em Soja also leads on iOS requirement (10.0 vs 15.0). 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.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PhD em Soja | 4 Farm |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | Free |
| Size | 12 MB | 92 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dynamica Soft Sistemas Ltda - ME](https://appshunter.io/developer/1040567644) | [Charles Steinmetz](https://appshunter.io/developer/1514567876) |

## What reviewers say

### PhD em Soja

[App page](https://appshunter.io/ios/app/phd-em-soja/id1173157077)

This application helps soybean farmers identify the current phenological stage of their crops and track nutrient absorption. It provides tools for interpreting soil and leaf analysis, visualizing nutrient uptake, and simulating nutrient extraction.

**Highlights:** Phenological stage identification, Nutrient absorption tracking, Soil and leaf analysis interpretation, Nutrient uptake graphs and tables, Customized nutrient extraction simulator

**Features:** macOS Compatibility

**In-app purchases:** none


### 4 Farm

[App page](https://appshunter.io/ios/app/4-farm/id1530731121)

This app assists precision agriculture professionals with navigation for sample collection points. Future updates will include polygon reading, productivity maps, and GeoTIFF image support.

**Highlights:** Navigation for sample collection points, Polygon reading (in development), Productivity maps (in development), GeoTIFF image support (in development), Save data to shapefile (in development)

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

**In-app purchases:** none


## Frequently asked questions

### Is PhD em Soja free?

PhD em Soja is free to download, with no in-app purchases.

### Is 4 Farm free?

4 Farm is free to download, with no in-app purchases.

### Do PhD em Soja or 4 Farm have ads?

Neither PhD em Soja nor 4 Farm shows ads.

### Which is updated more often, PhD em Soja or 4 Farm?

PhD em Soja ships an update weekly, and 4 Farm weekly. Most recently, PhD em Soja was updated on October 20, 2026 and 4 Farm on October 11, 2026.

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