Here's how Leftover Swap works: take a photo of food you don't want and post it on the app. Then people nearby can offer to trade or just take it off your hands.
"We're not gonna make millions," Newman says. "[The environmental concern] is a big part of it. There's a bunch of studies about how much more food we need to produce for the world population by 2050, and how fertilizers are less effective and our current rate of producing food isn't going to suffice. Meanwhile, in the US we produce so much more food than we consume and so much is going to waste."
Being freegan seems a lot easier.