# CH Marine vs Impact Environmental Group

The clearest difference is update cadence: Impact Environmental Group at every 4 days against CH Marine's every 2 months. 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.

CH Marine ships an update every 2 months, Impact Environmental Group every 4 days. The most recent releases landed on September 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CH Marine | Impact Environmental Group |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 71 MB | 64 MB |
| Requires iOS | 13.4 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [CH Marine Ltd](https://appshunter.io/developer/1573868794) | [Impact Environmental Group, Inc.](https://appshunter.io/developer/1092331019) |

## What reviewers say

### CH Marine

[App page](https://appshunter.io/ios/app/ch-marine/id1573868792)

**Features:** macOS Compatibility

**In-app purchases:** none


### Impact Environmental Group

[App page](https://appshunter.io/ios/app/impact-environmental-group/id6483806076)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CH Marine free?

CH Marine is free to download, with no in-app purchases.

### Is Impact Environmental Group free?

Impact Environmental Group is free to download, with no in-app purchases.

### Do CH Marine or Impact Environmental Group have ads?

Neither CH Marine nor Impact Environmental Group shows ads.

### Which is updated more often, CH Marine or Impact Environmental Group?

CH Marine ships an update every 2 months, and Impact Environmental Group every 4 days. Most recently, CH Marine was updated on September 26, 2026 and Impact Environmental Group on October 25, 2026.

---

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