Corn Diseases vs Cognitive Development Society
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Corn Diseases
This app offers a comprehensive guide to common corn diseases found in the US and Canada. It focuses on practical, in-field diagnosis to help users identify and understand various crop ailments.
- Overview of US and Canada corn diseases
- Emphasis on field diagnosis
- Practical identification tools
- Crop ailment information
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Provides an overview of the corn diseases that occur in the US and Canada, with an emphasis on diagnosing diseases in the field.
Cognitive Development Society
This application provides details for a bi-ennial conference, including pre-conference workshops, plenary speakers, symposia, oral papers, and poster sessions. It outlines the schedule and content for the event.
- Conference schedule
- Pre-conference workshops
- Plenary speakers
- Symposia details
- Oral and poster sessions
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The Cognitive Development Society bi-ennial conference is comprised of pre-conference workshops on Thursday October 17th followed by two days of conference proceedings. The conference will include two plenary speakers, invited symposia, contributed symposia and oral papers as well as poster sessions.
Screenshots
Verdict
The clearest difference is rating: Cognitive Development Society at 5.0 against Corn Diseases's 4.0. Cognitive Development Society also leads on update cadence (every 4 months vs every 15 months). Corn Diseases's advantage is monetization model (free vs ad-supported) and iOS requirement (8.1 vs 10.0). 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.
Cognitive Development Society holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Corn Diseases ships an update every 15 months, Cognitive Development Society every 4 months. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.
| Parameter | Corn Diseases | Cognitive Development Society |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 15 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 8.1 — better | 10.0 |
| Further details — not scored | ||
| Size | 16 MB | 86 MB |
| Age rating | 4+ | 17+ |
| Developer | Ag PhD | De Armond Management Ltd. |
Customer experience
Corn Diseases
Cognitive Development Society
In-app purchases
Corn Diseases
No in-app purchases
Cognitive Development Society
No in-app purchases
