# ZERO CARBON TH vs GFEAI2025

The clearest difference is update cadence: GFEAI2025 at every 3 days against ZERO CARBON TH's every 3 weeks. 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.

ZERO CARBON TH ships an update every 3 weeks, GFEAI2025 every 3 days. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | ZERO CARBON TH | GFEAI2025 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 49 MB | 128 MB |
| Requires iOS | **12** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Thailand Greenhouse Gas Management Organization](https://appshunter.io/developer/938564036) | [Eventthai](https://appshunter.io/developer/969891478) |

## 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


### GFEAI2025

[App page](https://appshunter.io/ios/app/gfeai2025/id6747063669)

**Features:** macOS Compatibility

**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 GFEAI2025 free?

GFEAI2025 is free to download, with no in-app purchases.

### Do ZERO CARBON TH or GFEAI2025 have ads?

Neither ZERO CARBON TH nor GFEAI2025 shows ads.

### Which is updated more often, ZERO CARBON TH or GFEAI2025?

ZERO CARBON TH ships an update every 3 weeks, and GFEAI2025 every 3 days. Most recently, ZERO CARBON TH was updated on September 23, 2026 and GFEAI2025 on September 21, 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.*