# Trailer Sentry vs SheepDogAG

The clearest difference is update cadence: SheepDogAG at every 6 weeks against Trailer Sentry's every 5 months. Trailer Sentry's advantage is iOS requirement (12.0 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.

Trailer Sentry ships an update every 5 months, SheepDogAG every 6 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Trailer Sentry | SheepDogAG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (6 ratings)](https://appshunter.io/ios/app/sheepdogag/id1594179577/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 2 MB | 83 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [7PSolutions, LLC](https://appshunter.io/developer/977726086) | [Jason Devenney](https://appshunter.io/developer/1594179579) |

## What reviewers say

### Trailer Sentry

[App page](https://appshunter.io/ios/app/trailer-sentry/id1221831418)

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

**In-app purchases:** none


### SheepDogAG

[App page](https://appshunter.io/ios/app/sheepdogag/id1594179577)

Manage your sheep flock records directly from your mobile device in real-time. Track breeding, weighing, treatments, and movements, and share data across multiple users and devices. This app helps sheep farmers streamline their farm management tasks.

**Highlights:** Flock register, Medicine purchases, Breeding tracking, Weighing records, Movement logs, Treatment history, Reporting

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

**In-app purchases:** none


## Frequently asked questions

### Is Trailer Sentry free?

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

### Is SheepDogAG free?

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

### Do Trailer Sentry or SheepDogAG have ads?

Neither Trailer Sentry nor SheepDogAG shows ads.

### Which is updated more often, Trailer Sentry or SheepDogAG?

Trailer Sentry ships an update every 5 months, and SheepDogAG every 6 weeks. Most recently, Trailer Sentry was updated on October 26, 2026 and SheepDogAG on October 24, 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.*