# Greenfield Global vs Trader PhD

The clearest difference is in-app purchases: Greenfield Global at none against Trader PhD's 4. Trader PhD's advantage is update cadence (every 2 months vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Trader PhD sells 4 in-app purchases, starting at $19.99 per month. Greenfield Global asks for nothing beyond the download.

Greenfield Global ships an update every 6 months, Trader PhD every 2 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Greenfield Global | Trader PhD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (273 ratings)](https://appshunter.io/ios/app/trader-phd/id1522000648/reviews)** |
| Number of ratings | — | **273** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 63 MB | 61 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Barchart](https://appshunter.io/developer/730277257) | [Trader PhD LLC](https://appshunter.io/developer/1522000650) |

## What reviewers say

### Greenfield Global

[App page](https://appshunter.io/ios/app/greenfield-global/id1423235870)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Trader PhD

[App page](https://appshunter.io/ios/app/trader-phd/id1522000648)

This app educates farmers, ranchers, and traders on marketing physical commodities and trading futures markets. It offers news, commentary, advisory, and educational resources, specializing in agricultural commodities but also covering a wide range of other markets.

**Highlights:** Commodity marketing education, Futures market trading guidance, Agricultural commodity specialization, News and market analysis, Proprietary algorithms for hedging, Educational university sections

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PhD Ag News | $19.99 | per month |
| PhD News+ Monthly | $39.99 | per month |
| PhD Ag News | $199.99 | per year |
| PhD News+ Yearly | $349.99 | per year |


## Frequently asked questions

### Is Greenfield Global free?

Greenfield Global is free to download, with no in-app purchases.

### Is Trader PhD free?

Trader PhD is free to download, with in-app purchases available.

### Do Greenfield Global or Trader PhD have ads?

Neither Greenfield Global nor Trader PhD shows ads.

### Which is updated more often, Greenfield Global or Trader PhD?

Greenfield Global ships an update every 6 months, and Trader PhD every 2 months. Most recently, Greenfield Global was updated on October 23, 2026 and Trader PhD on October 29, 2026.

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