# Karai by DriveKey — CO2 offset & mileage tracker > Eco-driving companion tracks carbon footprint, offers eco-scores, and facilitates emission offsetting. (iPhone/iPad app by DriveKey Corporation.) - Source: https://appshunter.io/ios/app/karai-by-drivekey/id1599712040 (this page in markdown: same URL + `.md`) - Developer: [DriveKey Corporation](https://appshunter.io/developer/1599712042) - Category: Navigation - Price: Free - Rating: 4.00/5 from 1 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 125 MB - Languages: English - Released: 2022-06-10 - Data updated: 2026-06-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/karai-by-drivekey/id1599712040/reviews.md ## What is Karai by DriveKey? Helping you track your carbon emissions Karai by DriveKey is your new eco-driving companion that calculates your carbon footprint every time you drive. Karai gives you an eco-score to help you to drive more sensitively and gives you the ability to offset your carbon footprint. Keep Karai with you on every journey to create a cleaner and more sustainable environment. Driving your awareness Karai learns your driving style and gives you scores for braking, acceleration and cornering smoothness. How you accelerate, brake and navigate bends significantly impacts your car’s fuel efficiency. Driving more eco-sensitively can help you to save on petrol and diesel long-term and will also reduce your vehicle’s impact on the environment. Offset your emissions to help fund innovative projects Rewilding more of our planet, planting more trees, protecting our existing wilderness areas and switching to more renewable energy sources, we can reduce our emissions and effectively offset the CO2 from your vehicle. These are precisely the innovative and essential projects that Karai supports to help build a better future for our world. Choose what you want to pay Karai is free to download and use, and you can pay to offset your emissions when you want to. You can even offset your carbon footprint to stay carbon positive. When you pay to offset your carbon footprint through Karai, your money is invested in projects including renewable energy schemes and afforestation programmes. These projects are verified and accredited by world-leading carbon registries such as The Gold Standard (WWF), Verified Carbon Standard (VCS), and The United Nations. Among the projects we support are UK-based charities such as Plant a Tree Foundation and Ribble Rivers Trust, as well as international projects such as Eden Reforestation, Madre de Dios REDD+, and Brazilian Amazon REDD. Feedback: All suggestions and feedback are most welcome! Please visit our Karai website to get in touch: https://www.kar.ai/ or use the Settings menu in the app. ## Key features - Carbon footprint tracking - Eco-driving scores - Braking, acceleration, and cornering analysis - Carbon emission offsetting - Support for environmental projects - Fuel efficiency tips ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/karai-by-drivekey/id1599712040/reviews.md ### 4/5 — Great, when it works. *2023-03-22* I’m an environmental science teacher, and I’d previously used OffCents for years to track my own carbon emissions, and as part of our climate change unit with my students. That app stopped working last year, and I’ve spent some time looking for new alternatives. Karai seemed to be the answer, even though I dislike that it requests your license plate number rather than your model of car. We’ll, it’s working fine for me personally, but I have a large number of students whose plate number can’t be found, and they’re unable to enter in information manually. Moreover, a sizable portion of those who do have their car in the app—and location tracking allowed—show no activity in spite of frequent driving. I’ve been unable to find tutorials, blogs, or any other support material to be able to figure out what’s going on. It’s embarrassing to have suggested this as a teaching tool and to get such inconsistent results. ### 5/5 — Great App *2022-04-08* Fantastic for offsetting, easy to use ### 5/5 — Great idea *2022-04-08* Such a simple way for me to offset the carbon emissions from my petrol car. A great idea until I can buy electric! ### 3/5 — Multiple vehicles *2022-04-04* An option to setup different vehicles, or change vehicle would be beneficial. Whether it be a hire car, car club vehicle, test driving a new car. Etc… ## Frequently asked questions about Karai by DriveKey ### What is Karai's primary function? Karai is an eco-driving companion that calculates your carbon footprint from driving. It provides an eco-score to help you drive more sensitively and offers the ability to offset your carbon footprint through various environmental projects. ### How does Karai help improve driving habits? Karai learns your driving style and provides scores for braking, acceleration, and cornering smoothness. By improving these aspects, you can enhance your car's fuel efficiency and reduce your environmental impact. ### What kind of projects does Karai support for offsetting emissions? Karai supports innovative projects like rewilding, tree planting, protecting wilderness areas, and switching to renewable energy. These projects are verified by world-leading carbon registries such as The Gold Standard and Verified Carbon Standard. ### Is Karai free to use? Yes, Karai is free to download and use. You can choose to pay to offset your emissions when you want to, with the option to become carbon positive. ### What devices does Karai support? Karai is supported on iPhone and iPod devices, as indicated by the provided data. ### How often is Karai updated? The latest version of Karai is 2.6.0, and it was last updated on March 6, 2024. This suggests a relatively active development cycle. ### Does Karai have ads? Yes, Karai contains advertisements. This is indicated by the 'hasAds' flag being true in the application data. ### What is the age rating for Karai? Karai has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 5 releases) ### 2.6.0 — 2024-03-06 We've made it even easier to understand the CO2 used and the cost of each trip. Enjoy! ### 2.5.1 — 2024-01-30 Hello! In this release, we have some look and feel improvements as well as optimisations under the hood. Enjoy! ### 2.5 — 2023-12-21 Happy Holidays! We've made trip recording even more accurate just in time for Christmas! ### 2.4 — 2023-09-15 We are all about accuracy and precision. This release will improve on both! Thank you for downloading. ### 2.3.4 — 2023-07-19 We've added more stability improvements and bug fixes in this release. ## Apps similar to Karai by DriveKey | App | Rating | Price | Category | | --- | --- | --- | --- | | [GPS Route Maps – Navigation](https://appshunter.io/ios/app/gps-route-maps-navigation/id1460469567) | 4.7 (858) | Free | Navigation | | [Famsy: Family Location Tracker](https://appshunter.io/ios/app/famsy-family-location-tracker/id1518649826) | 3.6 (216) | Free | Navigation | | [Geco air - Air quality](https://appshunter.io/ios/app/geco-air-air-quality/id1169064121) | 3.3 (4) | Free | Navigation | | [AutoMapa](https://appshunter.io/ios/app/automapa/id392945795) | 4.1 (27) | Free | Navigation | | [WattsUp](https://appshunter.io/ios/app/wattsup/id1396993858) | 2.0 (1) | Free | Navigation | | [EV Charging Time Calculator](https://appshunter.io/ios/app/ev-charging-time-calculator/id1584933971) | 4.0 (1) | Free | Navigation | --- *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 2026-06-10.*