Build a program or app to be offered at our website

I would like a program or app created that allows our website visitors to join a challenge. When they sign up, they get a calendar where they enter the number of times they ate a plant-based meal on any given day. Once they enter the data, users see a "score card" which shows the numerical value of earth's resources they conserved (and animals they saved) since they chose a plant-based meal instead of a meat-centric meal. They will see their score card for today, as well as their cumulative score card since the day they joined (inception) and on a weekly and monthly basis. Example of score card if user signed up 3 days ago, and has reported that he/she has eaten one plant-based meal today (User is given 2 options: did she/she eat a plant-based meal instead of a meat meal OR instead of a fish/seafood meal?): YOUR SCORE CARD TODAY: You ate 1 plant-based meal instead of a meat meal You saved 0.3 animals from slaughter You saved the world 10 gallons of water You saved the world 0.5 pounds of feed You saved the world 0.3 gallons of gas You prevented 0.15 tons of soil from erosion You prevented 0.0002 tons of greenhouse gas emmissions YOUR CUMULATIVE SCORE CARD (Since inception and weekly/monthly): You saved 0.9 animals from slaughter You saved the world 30 gallons of water You saved the world 1.5 pounds of feed You saved the world 0.9 gallons of gas You prevented 0.45 tons of soil from erosion You prevented 0.0006 tons of greenhouse gas emmissions I would like the program or app to also give a collective score card on our website of all users who joined the plant-based movement, and how many animals and world's resources they've all saved together (today and cumulative since inception and by week and month).