# The Earth Science Flashcards vs PHP Programming Pro

The clearest difference is update cadence: PHP Programming Pro at every 4 months against The Earth Science Flashcards's every 41 months. The Earth Science Flashcards's advantage is price ($1.99 vs $4.99) and iOS requirement (11.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

The Earth Science Flashcards costs $1.99 and PHP Programming Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

The Earth Science Flashcards ships an update every 41 months, PHP Programming Pro every 4 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | The Earth Science Flashcards | PHP Programming Pro |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 4 months** |
| Size | 15 MB | 13 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Hasan Cakir](https://appshunter.io/developer/814343093) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### The Earth Science Flashcards

[App page](https://appshunter.io/ios/app/the-earth-science-flashcards/id1403833043)

**Features:** macOS Compatibility

**In-app purchases:** none


### PHP Programming Pro

[App page](https://appshunter.io/ios/app/php-programming-pro/id6748204151)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is The Earth Science Flashcards free?

The Earth Science Flashcards costs $1.99, with no in-app purchases.

### Is PHP Programming Pro free?

PHP Programming Pro costs $4.99, with no in-app purchases.

### Do The Earth Science Flashcards or PHP Programming Pro have ads?

Neither The Earth Science Flashcards nor PHP Programming Pro shows ads.

### Which is updated more often, The Earth Science Flashcards or PHP Programming Pro?

The Earth Science Flashcards ships an update every 41 months, and PHP Programming Pro every 4 months. Most recently, The Earth Science Flashcards was updated on October 26, 2026 and PHP Programming Pro on October 25, 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.*