# Ground Spray vs ChemLog

The clearest difference is in-app purchases: Ground Spray at none against ChemLog's 2. Ground Spray also leads on iOS requirement (9.3 vs 17.0). ChemLog's advantage is update cadence (every 2 months vs every 12 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. ChemLog sells 2 in-app purchases, starting at $9.99 per month. Ground Spray asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Ground Spray against 5.0 for ChemLog. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Ground Spray ships an update every 12 months, ChemLog every 2 months. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Ground Spray | ChemLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/ground-spray/id528759748/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/chemlog/id6759417073/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | **Free** | Subscription |
| Size | 10 MB | 3 MB |
| Requires iOS | **9.3** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [University of Nebraska - Lincoln](https://appshunter.io/developer/317236993) | [Kyler Scheer](https://appshunter.io/developer/1572932798) |

## What reviewers say

### Ground Spray

[App page](https://appshunter.io/ios/app/ground-spray/id528759748)

This utility app helps custom applicators and growers predict spray quality and droplet size spectrum before application. It uses research data to calculate spray characteristics based on user-inputted parameters like nozzle type and pressure, aiding in pesticide efficacy and drift mitigation.

**Highlights:** Predict spray quality, Calculate droplet size spectrum, Input nozzle type, angle, orifice size, pressure, Save and email results, Mitigate pesticide drift, Access up-to-date spray quality information

**Features:** macOS Compatibility

**In-app purchases:** none


### ChemLog

[App page](https://appshunter.io/ios/app/chemlog/id6759417073)

This app helps farmers and pesticide applicators create compliant, professional spray records digitally. It logs application details, weather data, field information, equipment, and pilot profiles, generating one-tap PDF reports and exporting data to CSV.

**Highlights:** Log chemical applications with weather data, Define and map fields with automatic acreage calculation, Track equipment and pilot details, Import chemical labels via barcode or photo, Generate one-tap PDF compliance reports, Share records with crew via AirDrop/Messages, Export data to CSV

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChemLog Monthly | $9.99 | per month |
| ChemLog Annual | $99.99 | per year |


## Frequently asked questions

### Is Ground Spray free?

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

### Is ChemLog free?

ChemLog is free to download, with in-app purchases available.

### Which has better reviews, Ground Spray or ChemLog?

Ground Spray and ChemLog are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Ground Spray or ChemLog have ads?

Neither Ground Spray nor ChemLog shows ads.

### Which is updated more often, Ground Spray or ChemLog?

Ground Spray ships an update every 12 months, and ChemLog every 2 months. Most recently, Ground Spray was updated on October 5, 2026 and ChemLog on October 1, 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.*