# GrainFox vs Rafter66 Cattle Calculator

The clearest difference is in-app purchases: GrainFox at none against Rafter66 Cattle Calculator's 2. GrainFox also leads on iOS requirement (13.0 vs 18.0). Rafter66 Cattle Calculator's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Rafter66 Cattle Calculator sells 2 in-app purchases, starting at $9.99 per year. GrainFox asks for nothing beyond the download.

GrainFox ships an update every 2 months, Rafter66 Cattle Calculator every 2 weeks. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | GrainFox | Rafter66 Cattle Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 39 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Farmlink Marketing Solutions](https://appshunter.io/developer/1529988912) | [Augustsson Ranches Inc.](https://appshunter.io/developer/1846193923) |

## What reviewers say

### GrainFox

[App page](https://appshunter.io/ios/app/grainfox/id1529988910)

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

**In-app purchases:** none


### Rafter66 Cattle Calculator

[App page](https://appshunter.io/ios/app/rafter66-cattle-calculator/id6753994841)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Slaughter Calculator Yearly | $9.99 | per year |
| Slide Calculator Pro | $9.99 | per year |


## Frequently asked questions

### Is GrainFox free?

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

### Is Rafter66 Cattle Calculator free?

Rafter66 Cattle Calculator is free to download, with in-app purchases available.

### Do GrainFox or Rafter66 Cattle Calculator have ads?

Neither GrainFox nor Rafter66 Cattle Calculator shows ads.

### Which is updated more often, GrainFox or Rafter66 Cattle Calculator?

GrainFox ships an update every 2 months, and Rafter66 Cattle Calculator every 2 weeks. Most recently, GrainFox was updated on November 3, 2026 and Rafter66 Cattle Calculator on October 28, 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.*