# ParrotFields vs GSD Drone Calculator

The clearest difference is rating: GSD Drone Calculator at 5.0 against ParrotFields's 3.0. ParrotFields's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, ratings volume, update cadence and device support there is nothing between them.

Both are free to download. GSD Drone Calculator sells 3 in-app purchases, starting at $1.99 per month. ParrotFields asks for nothing beyond the download.

GSD Drone Calculator holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

ParrotFields ships an update every 2 months, GSD Drone Calculator monthly. Both last shipped on October 16, 2026.

## The numbers

| Metric | ParrotFields | GSD Drone Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/parrotfields/id1441287153/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gsd-drone-calculator/id6450757319/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 86 MB | 2 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Pix4D](https://appshunter.io/developer/952725638) | [Roman Akhromieiev](https://appshunter.io/developer/1223973006) |

## What reviewers say

### ParrotFields

[App page](https://appshunter.io/ios/app/parrotfields/id1441287153)

This app simplifies agricultural mapping and scouting with automated or manual drone flights. Generate real-time NDVI maps, monitor crop evolution, and conduct detailed scouting missions with on-demand photo and video capture. Annotate aerial data with text and ground-level photos.

**Highlights:** Automated and manual drone flights, Real-time NDVI map generation, Crop evolution monitoring, Semi-automated scouting flights, On-demand photo and video capture, Text annotations and ground-level photos

**Features:** macOS Compatibility

**In-app purchases:** none


### GSD Drone Calculator

[App page](https://appshunter.io/ios/app/gsd-drone-calculator/id6450757319)

Calculate Ground Sample Distance (GSD) for drone missions with this intuitive tool. Input drone specs and camera details to get precise GSD values for optimal mapping, surveying, and photography. Streamline your data collection and enhance accuracy for all aerial endeavors.

**Highlights:** Accurate GSD calculations, Input drone and camera specifications, Real-time GSD values, Optimize flight planning, Intuitive user interface, Save calculations, Image resolution insights

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month | $1.99 | per month |
| Annual | $19.99 | per year |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is ParrotFields free?

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

### Is GSD Drone Calculator free?

GSD Drone Calculator is free to download, with in-app purchases available.

### Which has better reviews, ParrotFields or GSD Drone Calculator?

GSD Drone Calculator is rated higher. ParrotFields averages 3.0 out of 5 from 2 ratings, while GSD Drone Calculator averages 5.0 from 1 ratings.

### Do ParrotFields or GSD Drone Calculator have ads?

GSD Drone Calculator shows ads; ParrotFields does not.

### Which is updated more often, ParrotFields or GSD Drone Calculator?

ParrotFields ships an update every 2 months, and GSD Drone Calculator monthly. Most recently, ParrotFields was updated on October 16, 2026 and GSD Drone Calculator on October 16, 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.*