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):
This app is incompatible with your device.
SFR Samsung GT-S5839iCompetitors are: http://wegreen.de, http://www.barcoo.com/. Similiar are: http://www.goodguide.com/, http://www.buycott.com .
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.
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.