GDU Calculator vs YMS Lite
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.
YMS Lite
This application allows growers to input and view agricultural data offline. It syncs with a main system when an internet connection is available, offering a selection of core features.
- Offline data input
- Offline data viewing
- Syncs with main YMS system
- Select core features
- Internet required for sign-in
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This is a lite version of the YMS system designed for growers to be able to input and view data while offline. The app requires internet connection when signing in, but can be operated offline and syncs up with the main YMS system when internet is available again. Only select features from the main system are included in the app.
Screenshots
Verdict
The clearest difference is rating: YMS Lite at 5.0 against GDU Calculator's 2.5. GDU Calculator's advantage is update cadence (every 6 weeks vs every 4 months) and ratings volume (11 vs 3). On price, ads, in-app purchases and monetization model 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.
YMS Lite holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 11 and 3 respectively.
GDU Calculator ships an update every 6 weeks, YMS Lite every 4 months. The most recent releases landed on June 4, 2026 and July 7, 2026 respectively.
| Parameter | GDU Calculator | YMS Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (11 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 11 — better | 3 |
| Update frequency | Every 6 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 57 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | IFA Productions Inc. | Dowdy Crop Innovations, LLC |
Customer experience
GDU Calculator
YMS Lite
In-app purchases
GDU Calculator
No in-app purchases
YMS Lite
No in-app purchases
Questions
Is GDU Calculator free?
Is YMS Lite free?
Which has better reviews, GDU Calculator or YMS Lite?
Do GDU Calculator or YMS Lite have ads?
Which is updated more often, GDU Calculator or YMS Lite?
Other comparisons
