# 2zero Climathon vs NMF.earth

2zero Climathon and NMF.earth both sit at 5.0 stars, but that hides the real split: 100% of NMF.earth's written reviews are positive against 48% of 2zero Climathon's. 2zero Climathon's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for 2zero Climathon against 5.0 for NMF.earth. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 48% of 2zero Climathon's written reviews are positive against 100% of NMF.earth's.

2zero Climathon ships an update every 2 weeks, NMF.earth every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 2zero Climathon | NMF.earth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/2zero-climathon/id1458584431/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/nmfearth/id1494561829/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 47.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 89 MB | 42 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [2zero GmbH](https://appshunter.io/developer/1624455527) | [Pierre Bresson](https://appshunter.io/developer/886617892) |

## What reviewers say

### 2zero Climathon

[App page](https://appshunter.io/ios/app/2zero-climathon/id1458584431)

This app helps you actively reduce your carbon footprint through a CO2 calculator and various challenges. Join communities or Klimathons to compete and earn rewards for your climate protection efforts. It's designed for a CO2-neutral future.

**Highlights:** CO2 calculator, Climate challenges, Sustainability rewards, Team competitions, News and tips, Community participation

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is 2zero Climathon free?

2zero Climathon is free to download, with no in-app purchases.

### Is NMF.earth free?

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

### Which has better reviews, 2zero Climathon or NMF.earth?

2zero Climathon and NMF.earth are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 2zero Climathon or NMF.earth have ads?

Neither 2zero Climathon nor NMF.earth shows ads.

### Which is updated more often, 2zero Climathon or NMF.earth?

2zero Climathon ships an update every 2 weeks, and NMF.earth every 6 weeks. Most recently, 2zero Climathon was updated on November 3, 2026 and NMF.earth on November 3, 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.*