# Grazing Calculator vs Farm Source Dairy Diary

The clearest difference is price: Farm Source Dairy Diary at Free against Grazing Calculator's $1.99. Farm Source Dairy Diary also leads on update cadence (fortnightly vs every 3 months). Grazing Calculator's advantage is review sentiment (60% vs 44%) and iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Farm Source Dairy Diary is free to download; Grazing Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Grazing Calculator ships an update every 3 months, Farm Source Dairy Diary fortnightly. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Grazing Calculator | Farm Source Dairy Diary |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | **60.0% of reviews** | 44.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 43 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Louise Hathaway](https://appshunter.io/developer/694874606) | [Fonterra Co-Operative Group](https://appshunter.io/developer/1017227327) |

## What reviewers say

### Grazing Calculator

[App page](https://appshunter.io/ios/app/grazing-calculator/id694874603)

This app helps dairy and beef farmers quickly calculate common grazing-related equations. It offers tools for determining days in a paddock, daily feed intake, crop allocation, and pasture cover. Users can choose between metric and US measurement systems and share their results.

**Highlights:** Days in Paddock calculation, DM/Cow/Day calculation, Crop Allocation calculation, Pre-Grazing Cover calculation, Average Pasture Cover calculation, Metric/US unit selection, Shareable results with notes

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

**In-app purchases:** none


### Farm Source Dairy Diary

[App page](https://appshunter.io/ios/app/farm-source-dairy-diary/id1313531287)

This app streamlines farm management by allowing quick recording of animal treatments, feed, fertiliser, and effluent applications. It automatically calculates withholding periods and RTV dates, saving time and ensuring compliance. The app functions offline, making it usable even without mobile coverage.

**Highlights:** Record animal treatments, Track feed and fertiliser applications, Log effluent and agrichemical spraying, Manage monthly hygiene checks, Calculate withholding and RTV dates, Offline functionality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Grazing Calculator free?

Grazing Calculator costs $1.99, with no in-app purchases.

### Is Farm Source Dairy Diary free?

Farm Source Dairy Diary is free to download, with no in-app purchases.

### Do Grazing Calculator or Farm Source Dairy Diary have ads?

Neither Grazing Calculator nor Farm Source Dairy Diary shows ads.

### Which is updated more often, Grazing Calculator or Farm Source Dairy Diary?

Grazing Calculator ships an update every 3 months, and Farm Source Dairy Diary fortnightly. Most recently, Grazing Calculator was updated on November 6, 2026 and Farm Source Dairy Diary on November 4, 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.*