# CO2 Tracker — Travel Responsibly. > Calculate flight carbon dioxide emissions and their impact on annual safe output. (iPhone/iPad app by Madhu Raghavan.) - Source: https://appshunter.io/ios/app/co2-tracker/id1459765187 (this page in markdown: same URL + `.md`) - Developer: [Madhu Raghavan](https://appshunter.io/developer/1459765186) - Category: Travel, Reference - Price: Free - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 12.1 · 11 MB - Languages: English - Released: 2019-04-20 - Data updated: 2026-06-11 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/co2-tracker/id1459765187/reviews.md ## What is CO2 Tracker? Have you ever wondered if your travel habits take a toll on the environment? Now, you can find out! CO2 Tracker allows you to calculate the carbon dioxide output for any flight between any two places, using a few simple steps. Enter your starting and ending cities, select from a list of 40 different aircraft, find out your flight distance, and then, your carbon dioxide output. The app also tells you what percentage of your total annual safe CO2 output the flight's emissions will constitute. CO2 Tracker can help you determine the potentially harmful environmental effects of your travels, and hopefully, can guide you to make responsible travel decisions in the future. Let's save the planet!  This app works best with your screen in portrait orientation. ## Key features - Calculate flight CO2 output - Enter departure and arrival cities - Select from 40 aircraft types - Determine flight distance - View percentage of annual safe CO2 output ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/co2-tracker/id1459765187/reviews.md ### 5/5 — Wow - no more planes for me! *2019-04-21, version 1.0* Really opened my eyes to the devastation planes cause. Thanks, Travel Responsibly! ### 5/5 — Very eye opening *2019-04-20, version 1.0* So much fun comparing different aircraft for a given flight! ## Frequently asked questions about CO2 Tracker ### How does CO2 Tracker calculate flight emissions? CO2 Tracker calculates emissions by taking your departure and arrival cities, selecting an aircraft type from a list of 40, and determining the flight distance. This data is then used to estimate your carbon dioxide output for that specific flight. ### What is the CO2 Tracker app's rating and how many reviews does it have? CO2 Tracker has an excellent rating of 5.0 stars based on 3 user reviews. This indicates a very positive user reception for the app. ### Is CO2 Tracker available on Android devices? Currently, CO2 Tracker is supported on iPhone and iPad devices. Information regarding Android availability is not provided in the app's data. ### When was CO2 Tracker last updated? The latest version of CO2 Tracker, version 3.0, was last updated on November 13, 2019. The app was initially released on April 20, 2019. ### What age rating does CO2 Tracker have? CO2 Tracker is suitable for users aged 4 and older, as indicated by its age rating of 4+. This makes it accessible for a wide range of users interested in tracking their travel's environmental impact. ### Does CO2 Tracker have ads? No, CO2 Tracker does not contain advertisements. The app is free to download and use without any ad interruptions. ### How does CO2 Tracker help users make responsible travel decisions? By calculating the carbon dioxide output of flights and showing what percentage it represents of your total annual safe CO2 output, CO2 Tracker helps you visualize the environmental impact of your travel. This awareness can guide you towards making more sustainable choices. ## Version history (last 3 releases) ### 3.0 — 2019-11-13 Updated interface with bug fixes and scrolling; app now optimized for all screen sizes. ### 2.0 — 2019-08-13 This is a brand new version of the CO2 Tracker featuring a much more user-friendly interface! The app now allows users to select from 40 different aircraft (23 new aircraft have been added since the first release)! In addition, the app now shows users what percentage of their total annual CO2 output their flight's emissions constitute. The addition of this new information allows users to be even more environmentally conscious regarding their future travel decisions. ### 1.0 — 2019-04-19 No release notes. ## Apps similar to CO2 Tracker | App | Rating | Price | Category | | --- | --- | --- | --- | | [Itero](https://appshunter.io/ios/app/itero/id1672845014) | — | Free | Travel | | [Open Flight : Flight Tracker](https://appshunter.io/ios/app/open-flight-flight-tracker/id6738797679) | — | Free | Travel | | [FlyLines](https://appshunter.io/ios/app/flylines/id6740076736) | 5.0 (2) | Free | Travel | | [Air Traffic Control Live](https://appshunter.io/ios/app/air-traffic-control-live/id6446869123) | 1.8 (27) | Free | Travel | | [Great Circle Miles Calculator](https://appshunter.io/ios/app/great-circle-miles-calculator/id6743672575) | 4.6 (8) | Free | Travel | | [YourFlights - Flight Tracker](https://appshunter.io/ios/app/yourflights-flight-tracker/id1212158909) | 4.4 (42) | Free | Travel | ## More apps by Madhu Raghavan - [Sustainability Helper](https://appshunter.io/ios/app/sustainability-helper/id1501457245) - [GK-MDv6](https://appshunter.io/ios/app/gk-mdv6/id6740056304) All apps by Madhu Raghavan: https://appshunter.io/developer/1459765186 ## Related topics [co2 tracker](https://appshunter.io/ios/topics/co2-tracker) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*