# LockON GPS vs Datamars PRO

The clearest difference is update cadence: Datamars PRO at every 3 weeks against LockON GPS's every 16 months. Datamars PRO also leads on iOS requirement (13.0 vs 17.0). 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.

LockON GPS ships an update every 16 months, Datamars PRO every 3 weeks. The most recent releases landed on September 14, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | LockON GPS | Datamars PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/datamars-pro/id6746123681/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 135 MB | 79 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Remmert](https://appshunter.io/developer/1585831760) | [Datamars SA](https://appshunter.io/developer/899066582) |

## What reviewers say

### LockON GPS

[App page](https://appshunter.io/ios/app/lockon-gps/id1585831758)

**Features:** macOS Compatibility

**In-app purchases:** none


### Datamars PRO

[App page](https://appshunter.io/ios/app/datamars-pro/id6746123681)

This app simplifies farm management by connecting Tru-Test devices and livestock data. It allows for live recording, session management, cloud syncing, and instant sharing of data to support informed decision-making and improve farm productivity.

**Highlights:** Connect Tru-Test devices, Live weight recording, Manage weigh sessions, Cloud sync for offline work, Instant data sharing, Support for NAIT and NLIS

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

**In-app purchases:** none


## Frequently asked questions

### Is LockON GPS free?

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

### Is Datamars PRO free?

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

### Do LockON GPS or Datamars PRO have ads?

Neither LockON GPS nor Datamars PRO shows ads.

### Which is updated more often, LockON GPS or Datamars PRO?

LockON GPS ships an update every 16 months, and Datamars PRO every 3 weeks. Most recently, LockON GPS was updated on September 14, 2026 and Datamars PRO on September 19, 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.*