“Each day, a person who eats a vegan diet saves 1,100 gallons of water, 45 pounds of grain, 30 square feet of forested land, 20 pounds of CO2 equivalent, and 1 animal's life.” — Cowspiracy

Climate change, ocean dead zones, fisheries depletion, deforestation, food safety, heart disease, obesity, and diabetes have all something in common: our demand for and consumption of animal products. By eliminating animal products (such as meat, dairy, and eggs) from our diet, we can reduce the amount of harm we inflict on the environment and on ourselves.

By simply entering your veganniversary (the day you became vegan) Cowculator calculates how much water, grain, forested land, CO2 equivalent, and animal lives you have saved by going vegan.

Not vegan yet? Download Cowculator today and learn the difference you can make by going vegan!

What’s New

Version 1.6.3

This release fixes some issues with the Cowculator widget. You might have to enable the widget again. We apologize for the inconvenience.

Please consider taking a moment to rate Cowculator and help spread the vegan message. Apps with a high rating have higher visibility in the App Store. Thank you all for supporting Cowculator.

Ratings and Reviews

4.4 out of 5
146 Ratings

146 Ratings

Sam /r/vegancirclejerk ;) ,

Amazing app!

I love this app! It gives you a clear, concise view into your impact on the environment. ignore the biddies complaining that the app is “rude” or something. activism isn’t friendly! the only reason i’m rating it four stars instead of five is a silly bug i noticed - it asks you to rate CONSTANTLY. every time i close a tab it asks me to rate. fix that and it’s a five star app all the way.

Developer Response ,

Thank you for your review. Our apologies for the overzealous rating pop-up. He is just very eager for your rating, it appears. What you describe shouldn't happen, but we will look into it and update our code where necessary.

CheezyTaco64 ,

Confusing App

I don’t have a problem with people who are vegan, and never have had a problem. My problem with them is when they are boastful or rude about it. A few of my friends have become vegan, but quickly changed back because of how some of the people who were vegan acted toward other people. I have also seen other reviews about this app addressing this problem and all that they have gotten from the developers in response is just our right rude, or offensive. I do not believe that it is right for these people to get such a mean response from the developers, who took the time to download your app, and use it, at least for a little bit. I feel like if the developers had bee at least a little bit nicer, I would probably be vegan, and use this app, but I have deleted it. I am not going to become vegan after some of the responses I’ve seen on other reviews for this app, which had valid points to them, and only one of the reviews had a valid response to it. Because of your offensive behavior, you have stopped millions of people from becoming vegan.

Thank you for your time.

Developer Response ,

You can still be vegan and hate this app, or the developer. Why would you let reviews on an application affect your moral and ethical decision-making?

RileyMG ,


I don’t understand why a lot of the featured reviews are one star from omnis talking about why they hate veganism. that’s so awkward, i wish we could report reviews on the app store. anyways, i got this app when i first went vegan and i like that i don’t need to keep track of how long it’s been, i can periodically check in and see what i’ve saved. i also like that it tells you your veganniversary! i like simplicity and this app is perfect, no annoying bells and whistles or useless features, just does what it’s designed to do. 10/10, visually appealing and a good motivator

Developer Response ,

Thank you for your kind words. And thanks for being the change.


Siraprapa Kridakorn
41.5 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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