How do you decide if a “green” app is trustworthy or just greenwashing?

A trusty green app doesn’t just have a green promise or claim; it digs deep. Apps like Too Good To Go (which partners with restaurants to sell surplus food) often come up as trustworthy because they’re transparent about their missions and impact. But some apps love to toss around buzzwords like “sustainable” or “eco-friendly” without much to back it up. If an app claims it’s “doing good for the planet,” I'd look for: Do they publish real data on their impact? Are their partners actually “green” or just using the trend? The more you dig, the clearer it’ll be if it’s legit or just riding the eco-hype wave. What else would you look for in a green App? Or before this question, are you using any green Apps?