# NMF.earth vs Zero CO2

The clearest difference is in-app purchases: NMF.earth at none against Zero CO2's 1. NMF.earth also leads on ads (none vs shown). Zero CO2's advantage is update cadence (every 3 days vs every 6 weeks) and ratings volume (4 vs 1). On price, rating, review sentiment and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for NMF.earth against 5.0 for Zero CO2. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

NMF.earth ships an update every 6 weeks, Zero CO2 every 3 days. The most recent releases landed on June 4, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | NMF.earth | Zero CO2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/nmfearth/id1494561829/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/zero-co2-get-climate-neutral/id1534365588/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 42 MB | 40 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Pierre Bresson](https://appshunter.io/developer/886617892) | [Caramba App Development](https://appshunter.io/developer/349530108) |

## What reviewers say

### NMF.earth

[App page](https://appshunter.io/ios/app/nmfearth/id1494561829)

Track and decrease your environmental impact by understanding your carbon footprint. Set personal emission goals and monitor your progress monthly to stay within your budget.

**Highlights:** Calculate CO2 emissions, Define carbon budget, Track monthly limits, Reduce carbon footprint, Actionable insights

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is NMF.earth free?

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

### Is Zero CO2 free?

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

### Which has better reviews, NMF.earth or Zero CO2?

NMF.earth and Zero CO2 are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do NMF.earth or Zero CO2 have ads?

Zero CO2 shows ads; NMF.earth does not.

### Which is updated more often, NMF.earth or Zero CO2?

NMF.earth ships an update every 6 weeks, and Zero CO2 every 3 days. Most recently, NMF.earth was updated on June 4, 2026 and Zero CO2 on September 11, 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.*