# Green Growth Forests vs Complex(Math Drills)

The clearest difference is update cadence: Complex(Math Drills) at every 2 weeks against Green Growth Forests's every 16 months. Green Growth Forests's advantage is iOS requirement (12.0 vs 15.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Green Growth Forests ships an update every 16 months, Complex(Math Drills) every 2 weeks. The most recent releases landed on June 1, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Green Growth Forests | Complex(Math Drills) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/green-growth-forests/id1525243294/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 76 MB | 20 MB |
| Requires iOS | **12.0** | 15.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SPOTTERON GmbH](https://appshunter.io/developer/1378099707) | [郷 田村](https://appshunter.io/developer/1574588679) |

## What reviewers say

### Green Growth Forests

[App page](https://appshunter.io/ios/app/green-growth-forests/id1525243294)

Contribute to forest conservation in Suriname by reporting tree logging activities. This app empowers citizens to act as scientists, gathering data to support national efforts in protecting the country's vast forest cover and vital natural resources.

**Highlights:** Report tree logging activities, Contribute to national forest data, Support climate change initiatives, Engage in citizen science, Monitor forest conservation efforts

**Features:** macOS Compatibility

**In-app purchases:** none


### Complex(Math Drills)

[App page](https://appshunter.io/ios/app/complexmath-drills/id6443714418)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Green Growth Forests free?

Green Growth Forests is free to download, with no in-app purchases.

### Is Complex(Math Drills) free?

Complex(Math Drills) is free to download, with no in-app purchases.

### Do Green Growth Forests or Complex(Math Drills) have ads?

Neither Green Growth Forests nor Complex(Math Drills) shows ads.

### Which is updated more often, Green Growth Forests or Complex(Math Drills)?

Green Growth Forests ships an update every 16 months, and Complex(Math Drills) every 2 weeks. Most recently, Green Growth Forests was updated on June 1, 2026 and Complex(Math Drills) on September 11, 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.*