# CarbonFlow CO₂ Tracker vs ESG Go

The clearest difference is in-app purchases: CarbonFlow CO₂ Tracker at none against ESG Go's 1. CarbonFlow CO₂ Tracker also leads on update cadence (every 9 days vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ESG Go sells 1 one-off in-app purchase. CarbonFlow CO₂ Tracker asks for nothing beyond the download.

CarbonFlow CO₂ Tracker ships an update every 9 days, ESG Go every 4 weeks. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CarbonFlow CO₂ Tracker | ESG Go |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 4 weeks |
| Size | 65 MB | 20 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [ANTONIO MARTINEZ GUEROLA](https://appshunter.io/developer/1676113785) | [恒俭 董](https://appshunter.io/developer/947356968) |

## What reviewers say

### CarbonFlow CO₂ Tracker

[App page](https://appshunter.io/ios/app/carbonflow-co-tracker/id6751472554)

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

**In-app purchases:** none


### ESG Go

[App page](https://appshunter.io/ios/app/esg-go/id6755216298)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tactical Terminal | $0.99 | one-time |


## Frequently asked questions

### Is CarbonFlow CO₂ Tracker free?

CarbonFlow CO₂ Tracker is free to download, with no in-app purchases.

### Is ESG Go free?

ESG Go is free to download, with in-app purchases available.

### Do CarbonFlow CO₂ Tracker or ESG Go have ads?

Neither CarbonFlow CO₂ Tracker nor ESG Go shows ads.

### Which is updated more often, CarbonFlow CO₂ Tracker or ESG Go?

CarbonFlow CO₂ Tracker ships an update every 9 days, and ESG Go every 4 weeks. Most recently, CarbonFlow CO₂ Tracker was updated on October 31, 2026 and ESG Go on October 30, 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.*