# Tru vs GPD

The clearest difference is review sentiment: GPD at 100% against Tru's 20%. Tru's advantage is iOS requirement (8.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Tru | GPD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/tru-test-data-link/id893033296/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 166 MB | 20 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Datamars SA](https://appshunter.io/developer/899066582) | [Charles Steinmetz](https://appshunter.io/developer/1514567876) |

## What reviewers say

### Tru

[App page](https://appshunter.io/ios/app/tru-test-data-link/id893033296)

Easily transfer session files from your Tru-Test device to your phone. Upload data to livestock management platforms, share via email, or send to national traceability programs. Manage device settings and record sessions remotely.

**Highlights:** Download session files, Upload to Datamars Livestock, Share via email, Send to traceability programs, Change device settings, Record sessions, Share GPS location

**Features:** macOS Compatibility

**In-app purchases:** none


### GPD

[App page](https://appshunter.io/ios/app/gpd/id1514567877)

This app helps farmers assess planting uniformity by measuring seed spacing. It calculates the Coefficient of Variation (CV%) and analyzes distribution regularity, identifying acceptable spacing, doubles, and skips to improve crop yield.

**Highlights:** Measures seed spacing uniformity, Calculates Coefficient of Variation (CV%), Analyzes distribution regularity (acceptable, doubles, skips), Identifies causes of planting errors, Aids in improving plantability

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

**In-app purchases:** none


## Frequently asked questions

### Is Tru free?

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

### Is GPD free?

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

### Do Tru or GPD have ads?

Neither Tru nor GPD shows ads.

### Which is updated more often, Tru or GPD?

Tru ships an update every 2 months, and GPD every 2 months. Most recently, Tru was updated on October 7, 2026 and GPD on October 5, 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.*