# Purdue Tomato Doctor vs Information Sharing Guide

The clearest difference is price: Information Sharing Guide at Free against Purdue Tomato Doctor's $0.99. Purdue Tomato Doctor's advantage is update cadence (every 4 months vs every 86 months) and iOS requirement (8.4 vs 10.0). On ads, in-app purchases and device support there is nothing between them.

Information Sharing Guide is free to download; Purdue Tomato Doctor costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Purdue Tomato Doctor ships an update every 4 months, Information Sharing Guide every 86 months. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Purdue Tomato Doctor | Information Sharing Guide |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/purdue-tomato-doctor/id887422661/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 86 months |
| Monetization | Paid | — |
| Size | 166 MB | 20 MB |
| Requires iOS | **8.4** | 10.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Purdue University](https://appshunter.io/developer/371741257) | [Indiana Office of Technology](https://appshunter.io/developer/819489827) |

## What reviewers say

### Purdue Tomato Doctor

[App page](https://appshunter.io/ios/app/purdue-tomato-doctor/id887422661)

Identify, diagnose, and manage tomato plant issues with expert guidance. Features nearly 500 high-quality images to help gardeners across North America pinpoint problems with fruits, leaves, stems, and more.

**Highlights:** Identify problems using 500+ images, Diagnose by plant part or suspected cause, Detailed descriptions and multiple images per problem, Identify beneficial insects, Expert management recommendations

**Features:** Vision Pro support

**In-app purchases:** none


### Information Sharing Guide

[App page](https://appshunter.io/ios/app/information-sharing-guide/id1186904913)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Purdue Tomato Doctor free?

Purdue Tomato Doctor costs $0.99, with no in-app purchases.

### Is Information Sharing Guide free?

Information Sharing Guide is free to download, with no in-app purchases.

### Do Purdue Tomato Doctor or Information Sharing Guide have ads?

Neither Purdue Tomato Doctor nor Information Sharing Guide shows ads.

### Which is updated more often, Purdue Tomato Doctor or Information Sharing Guide?

Purdue Tomato Doctor ships an update every 4 months, and Information Sharing Guide every 86 months. Most recently, Purdue Tomato Doctor was updated on November 3, 2026 and Information Sharing Guide on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*