NMF.earth vs Zero CO2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NMF.earth
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.
- Calculate CO2 emissions
- Define carbon budget
- Track monthly limits
- Reduce carbon footprint
- Actionable insights
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Understand and reduce your carbon footprint. Define your carbon budget and take action to stay on track with your monthly limits.
Zero CO2
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.
- 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
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ZeroCO2 monitors your phone's carbon footprint and keeps track of the CO2 emissions from your device. These CO2 emissions come from the data usage of your device. All cloud-services, emails, search queries, social network activities etc, are facilitated by large Data Centers, which consume large amounts of electricity to keep your data streams flowing. Over its lifetime, an iPhone can emit up to 60 kilograms of CO2. This electricity typically does not come 100% from green sources, and therefore leads to CO2 emissions. That's equivalent to more than 300 kilometers driving in a petrol-fueled car. Do you want your phone to become CO2-neutral? Then use the app to plant trees to compensate your emissions! With its comprehensive graphs, you can easily monitor how much CO2 you emit, and how your planted trees compensate these emissions. With every planted tree, you receive a certificate that proves the authenticity and shows the location of the planted tree. Prevent climate change, and become a carbon-neutral iPhone user! Note: Trees are planted by our partner Tree-Nation, the worldwide platform to reforest the world and fight climate change. All trees planted by Tree-Nation are certified by the best in class and most renowned certification standards that exist in this field. For this, Tree-Nation works with third-party certification organizations such as VCS, Gold Standard, and Plan Vivo.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | NMF.earth | Zero CO2 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 6 weeks | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 — better | 15.5 |
| Further details — not scored | ||
| Size | 42 MB | 40 MB |
| Age rating | 4+ | 12+ |
| Developer | Pierre Bresson | Caramba App Development |
Customer experience
NMF.earth
Zero CO2
In-app purchases
NMF.earth
No in-app purchases
Zero CO2
- Plant your tree$0.99








