It seems like you envision paying Americans to eat less meat?
In the grand scheme of things, Americans are very expensive people. For example, Argentinians both eat a lot of meat, and are currently in dire need for some hard currency.
I don't know if there's an app for this. However, you could do the next best thing and find a charity that works on promoting eating-less-meat in Argentina.
(Argentina is just an example, I have no clue whether it's the best value for money for this very specific. I'm just fairly sure that they are better value for money than spending money in the US.)
In the grand scheme of things, Americans are very expensive people. For example, Argentinians both eat a lot of meat, and are currently in dire need for some hard currency.
I don't know if there's an app for this. However, you could do the next best thing and find a charity that works on promoting eating-less-meat in Argentina.
(Argentina is just an example, I have no clue whether it's the best value for money for this very specific. I'm just fairly sure that they are better value for money than spending money in the US.)
https://blog.givewell.org/2010/12/27/animal-welfare-charitie... might be an interesting read.