# GPD vs Open UPL

The clearest difference is iOS requirement: Open UPL at 12.0 against GPD's 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.

## The numbers

| Metric | GPD | Open UPL |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 20 MB | 9 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Charles Steinmetz](https://appshunter.io/developer/1514567876) | [Vila Pixel](https://appshunter.io/developer/1233373012) |

## What reviewers say

### 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


### Open UPL

[App page](https://appshunter.io/ios/app/open-upl/id1541471567)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GPD free?

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

### Is Open UPL free?

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

### Do GPD or Open UPL have ads?

Neither GPD nor Open UPL shows ads.

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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.*