# Zero CO2 vs PineOx

The clearest difference is in-app purchases: PineOx at none against Zero CO2's 1. PineOx also leads on ads (none vs shown). Zero CO2's advantage is update cadence (every 3 days vs every 9 days) and rating (5.0 vs 4.8). On price, ratings volume, device support and iOS requirement there is nothing between them.

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

Zero CO2 holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

Zero CO2 ships an update every 3 days, PineOx every 9 days. The most recent releases landed on September 30, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Zero CO2 | PineOx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/zero-co2-get-climate-neutral/id1534365588/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/pineox/id6449542713/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 9 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 40 MB | 129 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Caramba App Development](https://appshunter.io/developer/349530108) | [Aliaksei Karatkou](https://appshunter.io/developer/1689593287) |

## 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 |


### PineOx

[App page](https://appshunter.io/ios/app/pineox/id6449542713)

Learn about your carbon footprint and plant real trees by completing educational lessons. Track your progress and see the collective impact of the community on a map. Become CO2 neutral and contribute to environmental sustainability.

**Highlights:** Calculate CO2 footprint, Plant real trees, Complete educational lessons, Track carbon neutrality countdown, Invite friends for seeds, View Tree Impact Map

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

**In-app purchases:** none


## Frequently asked questions

### Is Zero CO2 free?

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

### Is PineOx free?

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

### Which has better reviews, Zero CO2 or PineOx?

Zero CO2 is rated higher. Zero CO2 averages 5.0 out of 5 from 4 ratings, while PineOx averages 4.8 from 4 ratings.

### Do Zero CO2 or PineOx have ads?

Zero CO2 shows ads; PineOx does not.

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

Zero CO2 ships an update every 3 days, and PineOx every 9 days. Most recently, Zero CO2 was updated on September 30, 2026 and PineOx on September 2, 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.*