# Pest Prophet vs GDDTracker

The clearest difference is monetization model: Pest Prophet at free with in-app purchases against GDDTracker's subscription. Pest Prophet also leads on rating (5.0 vs 4.7) and iOS requirement (12.0 vs 17.6). GDDTracker's advantage is update cadence (every 2 days vs every 3 months) and ratings volume (13 vs 3). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Pest Prophet sells 10 in-app purchases, starting at $19.99 per month and GDDTracker sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Pest Prophet holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 13 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Pest Prophet ships an update every 3 months, GDDTracker every 2 days. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Pest Prophet | GDDTracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pest-prophet/id1302595322/reviews)** | [4.7 (13 ratings)](https://appshunter.io/ios/app/gddtracker/id6752981800/reviews) |
| Number of ratings | 3 | **13** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 27 MB | 15 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Farm Czar](https://appshunter.io/developer/1288372262) | [Kirk Faris](https://appshunter.io/developer/1842027731) |

## What reviewers say

### Pest Prophet

[App page](https://appshunter.io/ios/app/pest-prophet/id1302595322)

This app provides predictive crop disease and insect risk models using advanced weather data. It helps farmers and advisors interpret risk levels and forecasts to optimize pest management strategies and conserve resources.

**Highlights:** Predictive crop disease risk models, Insect growing degree day models, Remotely gathered weather data, No additional weather stations required, Easily interpreted daily risk levels and forecasts, Integrated pest management support

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Field | $19.99 | per month |
| 2 Fields | $39.99 | per month |
| 3 Fields | $59.99 | per month |
| 4 Fields | $79.99 | per month |
| 1 Field | $99.99 | per year |
| 5 Fields | $99.99 | per month |
| 2 Fields | $199.99 | per year |
| 3 Fields | $299.99 | per year |
| 4 Fields | $399.99 | per year |
| 5 Fields | $499.99 | per year |


### GDDTracker

[App page](https://appshunter.io/ios/app/gddtracker/id6752981800)

This app calculates Growing Degree Days (GDD) using hyper-local weather data to help you precisely time lawn care applications. It also logs applications, provides smart reminders, and includes profiles for over 50 grass varieties.

**Highlights:** Growing Degree Day (GDD) calculation and forecasting, Application logging with product details and notes, Smart reminders based on GDD, days, or soil temp, 50+ grass variety profiles, Rate calculator for product amounts, Multiple lawn management, CSV/PDF record export

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $9.99 | per year |


## Frequently asked questions

### Is Pest Prophet free?

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

### Is GDDTracker free?

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

### Which has better reviews, Pest Prophet or GDDTracker?

Pest Prophet is rated higher. Pest Prophet averages 5.0 out of 5 from 3 ratings, while GDDTracker averages 4.7 from 13 ratings.

### Do Pest Prophet or GDDTracker have ads?

Neither Pest Prophet nor GDDTracker shows ads.

### Which is updated more often, Pest Prophet or GDDTracker?

Pest Prophet ships an update every 3 months, and GDDTracker every 2 days. Most recently, Pest Prophet was updated on October 15, 2026 and GDDTracker on October 25, 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.*