# FertiCalc vs The Smartprobe App

The clearest difference is update cadence: FertiCalc at every 3 days against The Smartprobe App's every 27 months. FertiCalc also leads on iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

FertiCalc ships an update every 3 days, The Smartprobe App every 27 months. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | FertiCalc | The Smartprobe App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/the-smartprobe-app/id6499262556/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 27 months |
| Monetization | — | Free |
| Size | 17 MB | 49 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roedolf Johannes Nieuwenhuis](https://appshunter.io/developer/1231555866) | [Smartprobe](https://appshunter.io/developer/1742956596) |

## What reviewers say

### FertiCalc

[App page](https://appshunter.io/ios/app/ferticalc/id1231594109)

**Features:** macOS Compatibility

**In-app purchases:** none


### The Smartprobe App

[App page](https://appshunter.io/ios/app/the-smartprobe-app/id6499262556)

This application helps farmers and agronomists monitor soil health by collecting real-time soil compaction data. It generates detailed maps and customizable reports for informed field management and improved crop yields. Optimize your farming practices for increased productivity and sustainability.

**Highlights:** Real-time soil compaction readings, Detailed soil compaction maps, Customizable data reports, User-friendly interface, Grid overlays and soil moisture adjustability

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

**In-app purchases:** none


## Frequently asked questions

### Is FertiCalc free?

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

### Is The Smartprobe App free?

The Smartprobe App is free to download, with no in-app purchases.

### Do FertiCalc or The Smartprobe App have ads?

Neither FertiCalc nor The Smartprobe App shows ads.

### Which is updated more often, FertiCalc or The Smartprobe App?

FertiCalc ships an update every 3 days, and The Smartprobe App every 27 months. Most recently, FertiCalc was updated on October 12, 2026 and The Smartprobe App 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.*