# Release History
source: https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/release-history/index.md

This section contains a history of what has been implemented into the Carbon Calculator Experience (CCE) API service from the year 2021. Details of changes based on each release are mentioned in the following table:

| **Release Dates** | **Release Version** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         **Description**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|-------------------|---------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| June 2025         | v5.0.1              | Added UI enhancements.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| January 2025      | v4.2.1              | Added dark theme related fixes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| January 2024      | v3.0                | Created Tutorial Overlay and enhanced Priceless Planet Coalition sites. <br /> **Features released for cardholders:** * Added Tutorial Overlay to provide instructions to first-time logged-in CCE API users. <!-- --> * Updated Priceless Planet Coalition sites. <!-- --> * Enhanced donation flow. For more details, refer [here](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/get_dashboard/index.md).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| September 2023    | v2.0                | Added font and image customization support. <br /> **Features released for Issuers:** * Updated [Get Issuer](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/get_issuer/index.md) and [Update Issuer](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/update_issuer/index.md) API to support custom fonts.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| March 2023        | v1.4                | * Security Enhancements. * Added Educational Content. * Donate feature toggle, which allows the issuer to disable the donate feature during onboarding. <br /> **Features released for Issuers:** * Donate feature toggle. <br /> **Features released for cardholders** * Learn More section is added that educates users on the environment, carbon emissions, and tree restorations. Thus engaging users with the global cause for environmental sustainability.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| January 2023      | v1.3                | * Enhancement to APIs and User Interface. * Minor bug fixes. * Support to Polish language. <br /> **Features released for Issuers:** * Added [Update User](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/update_user/index.md) API. * Enhanced [Get Issuer](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/get_issuer/index.md) and [Update Issuer](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/update_issuer/index.md) API. * Enhanced address model of the [Enroll User](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/enroll_user/index.md) API. <br /> **Features released for cardholders** * Month-to-month carousel on the transaction screen. * Bar chart to compare individual emissions against global benchmarks (country average and UN goal). * Minor updates to content and layout. * Reliability scenarios enhancement in donation flow.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| June 2022         | v1.2                | Regional customization support was added. <br /> **Features released for Issuers:** * Localization and Internationalization. * Response encryption was added to the [Get User Dashboard API](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/get_dashboard/index.md).\</li/\> * WebView color customization option.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| April 2022        | v1.1                | Integration with the Data Access platform was added. Minor enhancements to the UI and defect fixes. <br /> **Features released for Issuers:** * Integration with Mastercard Data Access Portal for managing users' personal data.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| December 2021     | v1.0                | Released Carbon Calculator Experience to provide a plug-and-play user interface for mobile apps to use Carbon Calculator APIs. The solution provides insights into the carbon footprint of the enrolled user and facilitates donations to tree restoration projects to reduce carbon emissions. <br /> **Features released for Issuers:** * [Enroll User (Cardholder) API](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/enroll_user/index.md) * [Get User Dashboard API](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/get_dashboard/index.md) * [Get Aggregate Carbon Score for Enrolled User API](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/aggregate_carbon_scores/index.md) * [Delete User API](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/delete_user/index.md) * [Update Issuer details API](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/update_issuer/index.md) * [Get Issuer details API](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/get_issuer/index.md) * [Automated onboarding to the Sandbox using Mastercard Developers](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/tutorials-and-guides/index.md) <br /> **Features released for cardholders:** * Dashboard View * Category-wise carbon footprint (donut chart) -- Month-on-month basis * Category-wise comparative view in percentile * All transactions view with associated carbon emission * Category-wise transaction summary with associated carbon emission * Educational Content - Info screen * Educational Content -- Quick tips * Donations to forest restoration projects * Info Screen -- Priceless Planet coalition * Info Screen -- forest restoration projects |

Refer to the [Use cases](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/index.md) section for a functional explanation and the [API Reference](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/api-reference/index.md) section for technical details.