The low end part should be an issue but I have it limited to north america since my product lookup system is focused there and I don't know how well it will preform in other areas.
We are different in that we focus on the company ownership hierarchy rather then the individual product. This helps you use your buying power to support companies that share your values rather then just the green washed subsidiary.
Also our closest competitors are non-north american.
Forgot revenue model part. Right now we just want to see if people like the idea. After that we might try to generate income to cover server costs and then donate all extras to charity if the demand is there.
General ideas would be: ad-supported, donation version, pitch green alternative products, track why customers avoid products and then sell that data to brands(which would help the brands be more ethical... hopefully), etc.
Next: revenue model? It seems to be free for now, right?
Unfortunately my phone doesn't seem able to install it (I was curious if it'd work at all outside of the US, but my phone is indeed old and low-end):