# Growing Degree Days Tracker vs GDDTracker

The clearest difference is review sentiment: GDDTracker at 100% against Growing Degree Days Tracker's 33%. GDDTracker also leads on rating (4.7 vs 3.0) and ratings volume (13 vs 1). Growing Degree Days Tracker's advantage is monetization model (free with in-app purchases vs subscription). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Growing Degree Days Tracker sells 2 in-app purchases, starting at $3.99 per year 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.

GDDTracker holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: GDDTracker has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of Growing Degree Days Tracker's written reviews are positive against 100% of GDDTracker's.

Growing Degree Days Tracker ships an update weekly, GDDTracker every 2 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Growing Degree Days Tracker | GDDTracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/growing-degree-days-tracker/id6742846678/reviews) | **[4.7 (13 ratings)](https://appshunter.io/ios/app/gddtracker/id6752981800/reviews)** |
| Number of ratings | 1 | **13** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 3 MB | 15 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Hering](https://appshunter.io/developer/327542085) | [Kirk Faris](https://appshunter.io/developer/1842027731) |

## What reviewers say

### Growing Degree Days Tracker

[App page](https://appshunter.io/ios/app/growing-degree-days-tracker/id6742846678)

Track seasonal development and blooming phases using temperature-based indicators like GTS and GDD. Ideal for farmers, gardeners, and beekeepers to understand nature's progression based on accumulated heat, not just calendar dates.

**Highlights:** Automatic location detection, Daily updated temperature sums (GTS/GDD), Bloom calendar with progress indicator, Monitor multiple locations, Location-based seasonal development view

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| bis zu drei Standorte | $3.99 | per year |
| Bis zu zehn Standorte | $12.99 | 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 Growing Degree Days Tracker free?

Growing Degree Days Tracker 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, Growing Degree Days Tracker or GDDTracker?

GDDTracker is rated higher. Growing Degree Days Tracker averages 3.0 out of 5 from 1 ratings, while GDDTracker averages 4.7 from 13 ratings.

### Do Growing Degree Days Tracker or GDDTracker have ads?

Neither Growing Degree Days Tracker nor GDDTracker shows ads.

### Which is updated more often, Growing Degree Days Tracker or GDDTracker?

Growing Degree Days Tracker ships an update weekly, and GDDTracker every 2 days. Most recently, Growing Degree Days Tracker was updated on October 30, 2026 and GDDTracker on October 30, 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.*