# จันทรา vs ZERO CARBON TH

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

จันทรา ships an update every 3 months, ZERO CARBON TH every 3 weeks. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | จันทรา | ZERO CARBON TH |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 29 MB | 41 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [The Secretariat of the Senate](https://appshunter.io/developer/1444541196) | [Thailand Greenhouse Gas Management Organization](https://appshunter.io/developer/938564036) |

## What reviewers say

### จันทรา

[App page](https://appshunter.io/ios/app/id1483548404)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZERO CARBON TH

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

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

**In-app purchases:** none


## Frequently asked questions

### Is จันทรา free?

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

### Is ZERO CARBON TH free?

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

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

Neither จันทรา nor ZERO CARBON TH shows ads.

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

จันทรา ships an update every 3 months, and ZERO CARBON TH every 3 weeks. Most recently, จันทรา was updated on October 4, 2026 and ZERO CARBON TH on October 9, 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.*