Comparison

Zero CO2 vs Climate Mind

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

Climate Mind

This app helps you have productive and inspiring conversations about the climate crisis. It provides science-backed information, helps you understand your own climate personality, and guides discussions with friends and family to inspire action.

Highlights
  • Climate change information and solutions
  • Personalized climate personality quiz
  • Guided conversations with others
  • Myth-busting climate articles
  • Actionable solution discovery
Features
Read full description

Do you find it uncomfortable or awkward to have thoughtful conversations about the climate crisis or want to explore more about it? That’s where Climate Mind comes in: a 100% free app that informs about climate change’s impacts, solutions, myths, and guides conversations about it. Find common ground and have productive, inspiring conversations tailored to the friends and family members you talk with. Whether you want to personalize climate conversations or take concrete actions, our app provides everything you need to get started: * Take a quiz to learn about your own Climate Change personality and discover actionable solutions that align with your values and interests. * Explore thought-provoking and science-backed articles about the impacts of climate change so you can dispel common myths with accurate information. * Reach out to others through the app and invite them to have a conversation with you based on topics that align with both your climate personalities. The app finds mutually interesting topics to discuss and guides you through your conversation. Climate Mind helps you best frame your climate conversations to inspire and motivate action in others without bumming them out or starting arguments. Drive change together with conversations and turn dialogue into action with Climate Mind.

Screenshots

Zero CO24 screens
Climate Mind4 screens

Verdict

The call

The clearest difference is in-app purchases: Climate Mind at none against Zero CO2's 1. Climate Mind also leads on ads (none vs shown) and iOS requirement (13.4 vs 15.5). Zero CO2's advantage is update cadence (every 3 days vs monthly) and ratings volume (4 vs 1). On price, rating 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Zero CO2 against 5.0 for Climate Mind. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Zero CO2 ships an update every 3 days, Climate Mind monthly. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

Scorecard6 real differences · 4 level
Zero CO2 versus Climate Mind: the parameters behind the verdict, then further details
ParameterZero CO2Climate Mind
PriceFreeFree
Rating5.0 (4 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 3 days — betterMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.513.4 — better
Further details — not scored
Size40 MB24 MB
Age rating12+9+
DeveloperCaramba App DevelopmentKameron Rodrigues

Customer experience

Zero CO2

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Climate Mind

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Zero CO2

One-time1
  • Plant your tree$0.99
None

Climate Mind

No in-app purchases

Questions

Is Zero CO2 free?
Zero CO2 is free to download, with in-app purchases available.
Is Climate Mind free?
Climate Mind is free to download, with no in-app purchases.
Which has better reviews, Zero CO2 or Climate Mind?
Zero CO2 and Climate Mind are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.
Do Zero CO2 or Climate Mind have ads?
Zero CO2 shows ads; Climate Mind does not.
Which is updated more often, Zero CO2 or Climate Mind?
Zero CO2 ships an update every 3 days, and Climate Mind monthly. Most recently, Zero CO2 was updated on September 30, 2026 and Climate Mind on October 3, 2026.

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