Carbn.app – Passively manage your carbon footprint

It's a browser extension that monitors my purchases (like plane tickets) to compute a carbon footprint, then sells me the ability to purchase offsets, or recommends behavior changes?

Really interesting idea, I could see this doing well.

I'd personally need a ton of detail about how it collects data. If anything is sent back to a server then I'm out, the industry lost my trust by misleading about data sharing/usage. Also need a ton of data about the offset I'm buying, and what sort of cut the app takes from that purchase.

This reminds me a lot of Carboniferous[1], which is a project that was done recently by another team at a hackathon I went to. They just focused on the carbon footprint of travel, and how to minimalise the amount used in a trip using different modes of transport. I think tech has a big opportunity to help us optimize our resource usage and make it more concrete to think about.

[1] https://devpost.com/software/carboniferous

How does Carbn passively track carbon footprint? The website is scant on details