Comparison

GDU Calculator vs Smithfield Grain

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GDU Calculator

This app helps corn and wheat growers calculate Growing Degree Units (GDUs) for their crops. It provides daily temperature and GDU data, and can send push notifications about potential field issues based on crop growth stages.

Highlights
  • Growing Degree Unit calculation
  • Corn and wheat crop support
  • Day-by-day temperature data
  • Push notifications for field issues
  • Crop growth stage tracking
Features
Read full description

The Ag PhD GDU Calculator is a reference for corn and wheat growers to determine the amount of Growing Degree Units for their crops in the current crop season. Includes day-by-day breakdown of temperature and GDU data and has the option for push notifications informing growers of potential problems in their fields based on their crop growth stage, as calculated by the crop GDU from planting date.

About

Smithfield Grain

Access real-time harvest data and manage your grain facility operations directly from your mobile device. This app offers tools for signing contracts, viewing cash bids, futures, scale tickets, and commodity balances to help growers save time and maximize profits.

Highlights
  • Real-time harvest information
  • eSign contracts
  • View cash bids
  • Access futures data
  • Manage scale tickets
  • Track commodity balances
  • View settlement information
Read full description

Real-time harvest information for growers, by Smithfield Grain. The Smithfield Grain app is an essential mobile solution that connects your operation to your grain facility, providing real-time, actionable information to help you manage and grow your business. To get the most out of our app and stay updated with our communications, we recommend choosing to allow notifications. With a robust toolset that's constantly evolving to meet the demands of the modern grower, your Smithfield Grain app is built with powerful features to help you save time and maximize profits, including: eSign: Sign contracts from your mobile device Cash Bids: View a location's cash bids in real-time Futures: See Grains, Feed, Livestock, and Ethanol futures listed in order of your preference Scale Tickets: Easily access and filter scale tickets Contracts: See contract balances, including locked-in basis/futures prices Commodity Balances: View your commodity inventories Settlements: See information on your payments, when and where you need it The Smithfield Grain app is free, secure, and developed by the industry-leading Bushel platform.

Screenshots

GDU Calculator4 screens
Smithfield Grain4 screens

Verdict

The call

The clearest difference is rating: Smithfield Grain at 5.0 against GDU Calculator's 2.5. GDU Calculator's advantage is iOS requirement (13.0 vs 16.0). On price, ratings volume, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Smithfield Grain holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 11 and 4 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 8 level
GDU Calculator versus Smithfield Grain: the parameters behind the verdict, then further details
ParameterGDU CalculatorSmithfield Grain
PriceFreeFree
Rating2.5 (11 ratings)5.0 (4 ratings) — better
Positive reviews25.0% of reviews—
Number of ratings11 — better4
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size57 MB5 MB
Age rating+44+
DeveloperAg PhDSmithfield Foods, Inc.

Customer experience

GDU Calculator

All ratings11 ratings
Positive27.3%
Neutral18.2%
Negative54.5%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

Smithfield Grain

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GDU Calculator

No in-app purchases

None

Smithfield Grain

No in-app purchases

Questions

Is GDU Calculator free?
GDU Calculator is free to download, with no in-app purchases.
Is Smithfield Grain free?
Smithfield Grain is free to download, with no in-app purchases.
Which has better reviews, GDU Calculator or Smithfield Grain?
Smithfield Grain is rated higher. GDU Calculator averages 2.5 out of 5 from 11 ratings, while Smithfield Grain averages 5.0 from 4 ratings.
Do GDU Calculator or Smithfield Grain have ads?
Neither GDU Calculator nor Smithfield Grain shows ads.
Which is updated more often, GDU Calculator or Smithfield Grain?
GDU Calculator ships an update every 6 weeks, and Smithfield Grain every 6 weeks. Most recently, GDU Calculator was updated on November 4, 2026 and Smithfield Grain on November 2, 2026.

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