# Organisms & their Environment vs Environmental Engineering PRO

The clearest difference is update cadence: Environmental Engineering PRO at every 5 months against Organisms & their Environment's every 31 months. On price, ads, in-app purchases and device support there is nothing between them.

Organisms & their Environment costs $0.99 and Environmental Engineering PRO $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Organisms & their Environment ships an update every 31 months, Environmental Engineering PRO every 5 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Organisms & their Environment | Environmental Engineering PRO |
| --- | --- | --- |
| Price | $0.99 | **$0.49** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/organisms-and-their-environment/id1209436017/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 5 months** |
| Size | 51 MB | 23 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### Organisms & their Environment

[App page](https://appshunter.io/ios/app/organisms-and-their-environment/id1209436017)

**Features:** macOS Compatibility

**In-app purchases:** none


### Environmental Engineering PRO

[App page](https://appshunter.io/ios/app/environmental-engineering-pro/id6759217834)

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

**In-app purchases:** none


## Frequently asked questions

### Is Organisms & their Environment free?

Organisms & their Environment costs $0.99, with no in-app purchases.

### Is Environmental Engineering PRO free?

Environmental Engineering PRO costs $0.49, with no in-app purchases.

### Do Organisms & their Environment or Environmental Engineering PRO have ads?

Neither Organisms & their Environment nor Environmental Engineering PRO shows ads.

### Which is updated more often, Organisms & their Environment or Environmental Engineering PRO?

Organisms & their Environment ships an update every 31 months, and Environmental Engineering PRO every 5 months. Most recently, Organisms & their Environment was updated on October 23, 2026 and Environmental Engineering 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.*