Personal Environmental Responsibility Domain
The 2011 Green Travel Carbon Calculator was little more than a test of GPS on Android, the purpose for which it was originally created in fulfillment of a petty craigslist gig for someone unable to do same to a local NRDC branch in the Boston area.
The 2019 GT2 is a completed app for both Android and iOS with a service back end which serves as both a serious app in its own right and archetype of and for my DDD . The base app is free on Play and App Store, with cloud services sold via the production store here or in-app .
Later development of this domain may expand beyond the personal carbon footprint tracking to a general model of personal environment impact.