GDU Calculator vs Agvance SKY Mapping
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Growing Degree Unit calculation
- Corn and wheat crop support
- Day-by-day temperature data
- Push notifications for field issues
- Crop growth stage tracking
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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.
Agvance SKY Mapping
Manage growers and fields with advanced mapping tools. Initiate soil sampling, delineate field boundaries, and utilize scouting features. Generate reports and review field layers for comprehensive agricultural insights.
- Grower and field management
- Soil sampling initiation
- Field boundary delineation
- Scouting tools
- Report generation (PDF/paper)
- Field layer review
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Agvance Sky Mapping is an application that runs in conjunction with the popular Agvance suite of products. It enables users to manage growers and fields, though the use of a variety of mapping tools. Users can initiate soil sampling, delineate field boundaries and leverage tools for scouting. Sky Mapping also enables reporting functions such as generating paper/pdf reports and reviewing field layers such as sampling results and recommendation product surfaces.
Screenshots
Verdict
The clearest difference is review sentiment: Agvance SKY Mapping at 100% against GDU Calculator's 25%. Agvance SKY Mapping also leads on rating (3.7 vs 2.5) and update cadence (fortnightly vs every 6 weeks). GDU Calculator's advantage is iOS requirement (13.0 vs 15.6). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Agvance SKY Mapping holds the better App Store score, 3.7 against 2.5. Both are backed by a comparable volume of ratings — 11 and 12 respectively. Written reviews point the same way: 25% of GDU Calculator's written reviews are positive against 100% of Agvance SKY Mapping's.
GDU Calculator ships an update every 6 weeks, Agvance SKY Mapping fortnightly. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.
| Parameter | GDU Calculator | Agvance SKY Mapping |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (11 ratings) | 3.7 (12 ratings) — better |
| Positive reviews | 25.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 11 | 12 — better |
| Update frequency | Every 6 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 57 MB | 202 MB |
| Age rating | +4 | 4+ |
| Developer | Ag PhD | Software Solutions Integrated, LLC |
Customer experience
GDU Calculator
Agvance SKY Mapping
In-app purchases
GDU Calculator
No in-app purchases
Agvance SKY Mapping
No in-app purchases
Questions
Is GDU Calculator free?
Is Agvance SKY Mapping free?
Which has better reviews, GDU Calculator or Agvance SKY Mapping?
Do GDU Calculator or Agvance SKY Mapping have ads?
Which is updated more often, GDU Calculator or Agvance SKY Mapping?
Other comparisons
