# Zero CO2 vs zylobin

The clearest difference is in-app purchases: zylobin at none against Zero CO2's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Zero CO2 sells 1 one-off in-app purchase. zylobin asks for nothing beyond the download.

Zero CO2 ships an update every 3 days, zylobin every 5 days. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Zero CO2 | zylobin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/zero-co2-get-climate-neutral/id1534365588/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 60 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Caramba App Development](https://appshunter.io/developer/349530108) | [Dimuthu Wickramanayake](https://appshunter.io/developer/1799500340) |

## What reviewers say

### Zero CO2

[App page](https://appshunter.io/ios/app/zero-co2-get-climate-neutral/id1534365588)

This app tracks your phone's carbon footprint from data usage and helps you offset emissions by planting trees. Monitor your CO2 output and see how your reforestation efforts compensate for it, receiving certificates for each planted tree.

**Highlights:** Monitors phone carbon footprint, Tracks CO2 emissions from data usage, Compensates emissions by planting trees, Visualizes CO2 emissions and tree compensation, Provides certificates for planted trees

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plant your tree | $0.99 | one-time |


### zylobin

[App page](https://appshunter.io/ios/app/zylobin/id6742696056)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zero CO2 free?

Zero CO2 is free to download, with in-app purchases available.

### Is zylobin free?

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

### Do Zero CO2 or zylobin have ads?

Both Zero CO2 and zylobin show ads.

### Which is updated more often, Zero CO2 or zylobin?

Zero CO2 ships an update every 3 days, and zylobin every 5 days. Most recently, Zero CO2 was updated on October 15, 2026 and zylobin on October 28, 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.*