NYT is trying to make money
itunes.apple.com
itunes.apple.com
I suspect there is quite a market for this, actually.
I would suggest reading some Jules Verne! You can find full texts of his stories online in French and English, and reading them in parallel (with the English as a check on your comprehension) will help you hoover up a lot of vocabulary while enjoying a fun story.
Japanese publishers sold hundreds of millions of dollars worth of "Learn English with Barack Obama" by taking his most famous speeches and annotating them. Yes, I think there is a wee bit of a market for selling practical English instruction to high-brow consumers in other nations. (Granted, a lot of people buying those books are paying for the experience of buying the book rather than paying to learn English, but that is true of plenty of software, too.)
Take my money. please.
And if someone can learn a new language more easily with it, it has life-changing potential (I know that learning English changed my life, and I would have loved to have this back then).