# Sr. Reis vs GPD

The clearest difference is update cadence: GPD at monthly against Sr. Reis's every 14 months. 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.

Sr. Reis ships an update every 14 months, GPD monthly. The most recent releases landed on October 16, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Sr. Reis | GPD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Monthly** |
| Monetization | — | Free |
| Size | 47 MB | 21 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STARAPP SISTEMAS LTDA ME](https://appshunter.io/developer/972886310) | [Charles Steinmetz](https://appshunter.io/developer/1514567876) |

## What reviewers say

### Sr. Reis

[App page](https://appshunter.io/ios/app/sr-reis/id1500656199)

**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 Sr. Reis free?

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

### Is GPD free?

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

### Do Sr. Reis or GPD have ads?

Neither Sr. Reis nor GPD shows ads.

### Which is updated more often, Sr. Reis or GPD?

Sr. Reis ships an update every 14 months, and GPD monthly. Most recently, Sr. Reis was updated on October 16, 2026 and GPD on October 22, 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.*