Comparison

Zero CO2 vs PineOx

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

PineOx

Learn about your carbon footprint and plant real trees by completing educational lessons. Track your progress and see the collective impact of the community on a map. Become CO2 neutral and contribute to environmental sustainability.

Highlights
  • Calculate CO2 footprint
  • Plant real trees
  • Complete educational lessons
  • Track carbon neutrality countdown
  • Invite friends for seeds
  • View Tree Impact Map
Features
Read full description

Let us plant a tree or a whole forest for you. Help the environment. Become CO2 neutral today. For free. Core Mechanics Firstly you receive a digital seed. You need to water it. You water it by completing lessons. By completing 2 lessons you water your digital seed to a tree. And the PineOx team plants a real tree. The first lesson is the CO2 calculator. It calculates your annual CO2 footprint based on your habits and lifestyle. It allows the PineOx app to calculate for how long planting one tree will make you CO2 neutral. After planting your first tree the countdown starts. It shows you for how long you will remain carbon neutral. To remain CO2 neutral you need to continue completing lessons and plant trees. Inviting Friends, Gifting Trees & Tree Impact Map The first seed is free and is given to every user who joins PineOx. To open access to the following seed you need to watch some ads or invite a friend. You can invite any amount of friends. Every friend who joined via your invite code gives you an additional seed. Every user of PineOx has Tree Impact. Tree impact represents planted trees. It includes trees planted by you plus trees planted by friends you invited and subsequently by friends invited by your friends. Right after installation, you can make 2 gifts for your friends. You can make gifts only to users who haven’t yet been present on the platform. After claiming their gift they join your network and their planted trees influence your tree impact. Transparency & Actual Tree Planting Because many green initiatives aren’t transparent we made Tree Impact Map. Tree impact map allows you to see tree impact of every member of the community. Information about who invited who is seen by everyone. We at PineOx plant trees by ourselves. We do not pass it to some third-party organization. You can check the image and location of every tree planted by the PineOx Team. All the images and locations for planted trees are available in the Tree Impact Map section of the app

Screenshots

Zero CO24 screens
PineOx4 screens

Verdict

The call

The clearest difference is in-app purchases: PineOx at none against Zero CO2's 1. PineOx also leads on ads (none vs shown). Zero CO2's advantage is update cadence (every 3 days vs every 9 days) and rating (5.0 vs 4.8). On price, ratings volume, device support and iOS requirement 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. PineOx asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Zero CO2 holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

UpkeepUpdate frequency

Zero CO2 ships an update every 3 days, PineOx every 9 days. The most recent releases landed on September 11, 2026 and September 2, 2026 respectively.

Scorecard5 real differences · 5 level
Zero CO2 versus PineOx: the parameters behind the verdict, then further details
ParameterZero CO2PineOx
PriceFreeFree
Rating5.0 (4 ratings) — better4.8 (4 ratings)
Positive reviews100.0% of reviews—
Number of ratings44
Update frequencyEvery 3 days — betterEvery 9 days
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.515.0 — better
Further details — not scored
Size40 MB129 MB
Age rating12+4+
DeveloperCaramba App DevelopmentAliaksei Karatkou

Customer experience

Zero CO2

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

PineOx

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Zero CO2

One-time1
  • Plant your tree$0.99
None

PineOx

No in-app purchases

Questions

Is Zero CO2 free?
Zero CO2 is free to download, with in-app purchases available.
Is PineOx free?
PineOx is free to download, with no in-app purchases.
Which has better reviews, Zero CO2 or PineOx?
Zero CO2 is rated higher. Zero CO2 averages 5.0 out of 5 from 4 ratings, while PineOx averages 4.8 from 4 ratings.
Do Zero CO2 or PineOx have ads?
Zero CO2 shows ads; PineOx does not.
Which is updated more often, Zero CO2 or PineOx?
Zero CO2 ships an update every 3 days, and PineOx every 9 days. Most recently, Zero CO2 was updated on September 11, 2026 and PineOx on September 2, 2026.

Other comparisons