# ZERO CARBON TH vs Marine Warning

The clearest difference is iOS requirement: ZERO CARBON TH at 12 against Marine Warning's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

ZERO CARBON TH ships an update every 3 weeks, Marine Warning monthly. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | ZERO CARBON TH | Marine Warning |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 49 MB | 35 MB |
| Requires iOS | **12** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Thailand Greenhouse Gas Management Organization](https://appshunter.io/developer/938564036) | [Department of Marine and Coastal Resources](https://appshunter.io/developer/916568665) |

## What reviewers say

### ZERO CARBON TH

[App page](https://appshunter.io/ios/app/zero-carbon-th/id6468645997)

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

**In-app purchases:** none


### Marine Warning

[App page](https://appshunter.io/ios/app/marine-warning/id6472727202)

**In-app purchases:** none


## Frequently asked questions

### Is ZERO CARBON TH free?

ZERO CARBON TH is free to download, with no in-app purchases.

### Is Marine Warning free?

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

### Do ZERO CARBON TH or Marine Warning have ads?

Neither ZERO CARBON TH nor Marine Warning shows ads.

### Which is updated more often, ZERO CARBON TH or Marine Warning?

ZERO CARBON TH ships an update every 3 weeks, and Marine Warning monthly. Most recently, ZERO CARBON TH was updated on September 23, 2026 and Marine Warning on September 12, 2026.

---

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