Where are my trees?
I had a whole island with trees and now I’ve nothing :( very curious where it all went — did it change with an update? Only way to plant trees now is to purchase. You used to get them for steps, too, no?
Free
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About
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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What's New in Zero CO2
2.9
December 30, 2025
This update ensures full compatibility with iOS26! Enjoy the app and save the planet!
1
In-App Purchases
$0.99
Plant your tree
Plant a tree to compensate your emission
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FAQ
What is Zero CO2's main purpose?
Zero CO2 monitors your phone's carbon footprint generated by data activity and allows you to offset these emissions by planting trees. It helps users become climate neutral by tracking their digital impact and contributing to reforestation.
How does Zero CO2 track my phone's carbon footprint?
The app monitors the CO2 emissions resulting from your device's data usage, including cloud services, emails, search queries, and social network activities. These activities are facilitated by data centers that consume electricity, leading to emissions.
How can I make my phone CO2-neutral with Zero CO2?
You can achieve CO2 neutrality by using the app to plant trees that compensate for your device's emissions. The app provides graphs to visualize your emissions and how your planted trees offset them.
What happens when I plant a tree with Zero CO2?
When you plant a tree through the app, you receive a certificate that authenticates the tree and shows its planting location. These trees are planted by their partner, Tree-Nation, a platform focused on reforestation.
Are the trees planted by Zero CO2 certified?
Yes, all trees planted by Tree-Nation, the partner for Zero CO2, are certified by renowned standards like VCS, Gold Standard, and Plan Vivo. These certifications are verified by third-party organizations.
Does Zero CO2 have ads?
Yes, Zero CO2 contains advertisements. As a free application with in-app purchases, it utilizes ads to support its operations and services.
What devices does Zero CO2 support?
Zero CO2 is currently supported on iPhones and iPods. It is designed for Apple mobile devices.
How often is Zero CO2 updated?
The latest version of Zero CO2 is 2.9, and it was last updated on December 30, 2025. This indicates a recent update and ongoing development.
