Comparison

2zero Climathon vs EcoHero

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

Head to head
About

2zero Climathon

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
Read full description

2zero (formerly the Climate Compass) is your personal climate app and the officiall Klimathon app. It helps you to actively reduce your carbon footprint with the help of a CO2 calculator & multiple CO2 challenges. Become part of a Klimathon or our 2Zero community and support our Sustainability Promise. 2zero is the perfect sustainability app for a start into a CO2 neutral future. Protect the climate together, we show you how! -I would like to participate in a Klimathon. Am I in the right place?- You are absolutely right! 2zero (formerly Climate compass) is the official app of the Klimathon. Simply select your Klimathon organizer in the Community Selection step of the registration process and you'll be part of your Klimathon, enjoying all the benefits of your community. Be ready for 42 days of climate protection! -How does 2zero work?- 1. Calculate your own ecological footprint With our CO2 calculator you can easily calculate your ecological footprint. We already offer you a shortened version of the calculator during onboarding. As soon as you have joined your community, you can use the calculator in its full complexity and calculate your customized CO2 footprint. The sustainability calculator was developed in cooperation with the Fraunhofer Institute and the University of Kassel, among others. 2. Master different challenges to reduce your CO2 consumption More than 160 climate challenges focus on different topics of everyday life. For completing a challenge you receive valuable climate points. Of course, all challenges include detailed information texts that explain the circumstances and effects of the challenge in detail. The data is always up to date thanks to cooperation with Worldwatchers, Frauenhofer.iee, the Wuppertal Institute and the University of Kassel. 3. Get sustainable rewards for your climate protection efforts Redeem your well-earned climate points for exciting rewards from the sustainability sector. Our partner network is constantly growing, so you can expect new offers on a regular basis. 4. Compete with other climate protectors Fancy a bit of competition? (it's all about climate protection, so there are really only winners here!) Create your own team or join one of the existing teams and collect climate points for your team. How much CO2 can you save together? -Other features- Have a look at our news section. You can expect exciting news about climate protection actions & events. Our CO2 Challenges are not enough for you? Our guidebook provides you with even more tips & tricks on climate protection & sustainable living. The Klimathon App provides the collaborative and digital platform to complete our Climate Challenges. The CO2 Calculator and the different CO2 Challenges help you to reduce your ecological footprint. You can either participate in a Klimathon or in our 2Zero Community and take your first steps towards more sustainability. As your personal climate compass, our sustainability app offers you a great opportunity for sustainable change in everyday life. Let's go, let's protect the climate together.

About

EcoHero

Track your daily eco-friendly activities and visualize their positive impact on the environment. Learn sustainable living tips, reduce your footprint, and inspire others to join the movement.

Highlights
  • Track eco activities (meals, transport, plastic)
  • Visualize water, land, CO2, and plastic savings
  • Eco Calendar for sustainable days
  • Learn about environmental impact of daily habits
  • Share activities and motivate others
  • Eat greener and reduce plastic waste
  • Travel eco-friendly
Features
Read full description

Small changes in your everyday decisions can have a significant impact on the environment. Track activities beneficial for the planet and see your impact. TRACK YOUR ECO ACTIVITIES & SEE YOUR IMPACT • Track your meals, transport, plastic usage and all kinds of eco activities. • See the amounts of Water, Land, CO2 and Plastics you are saving/reducing. • Fill your eco Calendar with Vegan, Vegetarian, Car-free or Plastic-free days. • Check your monthly summaries to see your overall contribution and progress. LEARN HOW TO LIVE MORE SUSTAINABLE Learn how modes of transport, meals you consume and other daily activities differ in their environmental impact. • Learn how much CO2 is produced and how much water and land consumed by your daily activities. • See how little changes in your daily habits can make a huge difference in your footprint. • Read "Did you know?" and “Interesting facts” and widen your environmental knowledge. INSPIRE OTHERS Encourage each other in caring about the planet. Share your activities and motivate your friends or other users. • Your tracked activities are posted in your feed, visible for your followers. • Share your activities and summaries further on your favorite social networks, e.g. Facebook, Instagram, or Twitter. EAT GREENER Replace your meat meals with more eco-friendly options and see your impact. • Track the amounts of water, land and CO2 saved/reduced per portion. • See the footprint difference between vegan, vegetarian, fish and meat meals. • Complete vegan and vegetarian weekly challenges. REDUCE PLASTIC WASTE Replace single-use plastics with their reusable alternatives. • Track your usage of reusable cups, bottles, bags or lunch boxes. • Complete plastic-free challenges or try plastic-free shopping. TRAVEL ECO FRIENDLY Leave your car at home and try an eco-friendlier way of transport. • Replace your car by train, bus or public transport and see how much you've reduced your carbon footprint. • Already living car-free? Walk or bike and compare carbon footprint to other modes of transport. • Complete the “car-free week” challenge and receive an extra badge. Terms of service: https://ecohero.app/terms-of-service/ Privacy policy: https://ecohero.app/privacy-policy/

Screenshots

2zero Climathon4 screens
EcoHero4 screens

Verdict

The call

The clearest difference is review sentiment: EcoHero at 91% against 2zero Climathon's 48%. EcoHero also leads on ratings volume (27 vs 1) and iOS requirement (12.0 vs 15.0). 2zero Climathon's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price 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. EcoHero sells 8 in-app purchases, starting at $1.99 per month. 2zero Climathon asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

2zero Climathon holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: EcoHero has 27 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 48% of 2zero Climathon's written reviews are positive against 91% of EcoHero's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

2zero Climathon ships an update every 2 weeks, EcoHero monthly. Both last shipped on November 3, 2026.

Scorecard8 real differences · 2 level
2zero Climathon versus EcoHero: the parameters behind the verdict, then further details
Parameter2zero ClimathonEcoHero
PriceFreeFree
Rating5.0 (1 ratings) — better4.8 (27 ratings)
Positive reviews47.7% of reviews90.6% of reviews — better
Number of ratings127 — better
Update frequencyEvery 2 weeks — betterMonthly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size89 MB51 MB
Age rating4+4+
Developer2zero GmbHBytePioneers s. r. o.

Customer experience

2zero Climathon

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews44 reviews
Positive47.7%
Neutral13.6%
Negative38.6%

EcoHero

All ratings25 ratings
Positive96.0%
Neutral4.0%
Negative0.0%
Written reviews53 reviews
Positive90.6%
Neutral1.9%
Negative7.5%

In-app purchases

None

2zero Climathon

No in-app purchases

8 purchases

EcoHero

Subscriptions8
  • GuardianHero Membership$1.991 Month
  • GuardianHero Membership$2.991 Month
  • GuardianHero Membership$4.991 Month
Show 5 more
  • GuardianHero Membership$9.991 Month
  • GuardianHero Yearly Membership$19.991 Year
  • GuardianHero Yearly Membership$29.991 Year
  • GuardianHero Yearly Membership$49.991 Year
  • GuardianHero Yearly Membership$99.991 Year

Questions

Is 2zero Climathon free?
2zero Climathon is free to download, with no in-app purchases.
Is EcoHero free?
EcoHero is free to download, with in-app purchases available.
Which has better reviews, 2zero Climathon or EcoHero?
2zero Climathon is rated higher. 2zero Climathon averages 5.0 out of 5 from 1 ratings, while EcoHero averages 4.8 from 27 ratings.
Do 2zero Climathon or EcoHero have ads?
EcoHero shows ads; 2zero Climathon does not.
Which is updated more often, 2zero Climathon or EcoHero?
2zero Climathon ships an update every 2 weeks, and EcoHero monthly. Most recently, 2zero Climathon was updated on November 3, 2026 and EcoHero on November 3, 2026.

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