# Gentry Controls vs Calf Keeper

The clearest difference is in-app purchases: Gentry Controls at none against Calf Keeper's 4. Calf Keeper's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Calf Keeper sells 4 in-app purchases, starting at $5.99 per month. Gentry Controls asks for nothing beyond the download.

Gentry Controls ships an update weekly, Calf Keeper every 2 weeks. Both last shipped on September 23, 2026.

## The numbers

| Metric | Gentry Controls | Calf Keeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/calf-keeper/id6477791805/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 63 MB | 56 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gentry Controls & Consulting LLC](https://appshunter.io/developer/1719797493) | [CattleSync, LLC](https://appshunter.io/developer/542917312) |

## What reviewers say

### Gentry Controls

[App page](https://appshunter.io/ios/app/gentry-controls/id6473788427)

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

**In-app purchases:** none


### Calf Keeper

[App page](https://appshunter.io/ios/app/calf-keeper/id6477791805)

This app helps livestock owners manage their herds by tracking calf births, linking animals, and calculating calving dates. Premium features allow for custom data fields, animal scoring, photo uploads, and collaborative herd management.

**Highlights:** Calf birth tracking, Herd linking (cows, bulls), Gestation calculator, Customizable data fields, Animal scoring, Photo uploads, Collaborative herd management

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calf Keeper Plus (Monthly) | $5.99 | per month |
| Calf Keeper Pro (Monthly) | $9.99 | per month |
| Calf Keeper Plus (Yearly) | $59.99 | per year |
| Calf Keeper Pro (Yearly) | $99.99 | per year |


## Frequently asked questions

### Is Gentry Controls free?

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

### Is Calf Keeper free?

Calf Keeper is free to download, with in-app purchases available.

### Do Gentry Controls or Calf Keeper have ads?

Neither Gentry Controls nor Calf Keeper shows ads.

### Which is updated more often, Gentry Controls or Calf Keeper?

Gentry Controls ships an update weekly, and Calf Keeper every 2 weeks. Most recently, Gentry Controls was updated on September 23, 2026 and Calf Keeper on September 23, 2026.

---

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