I've seen many of these posts asking about "ideas that will generate x money" coming up lately. While it is certainly possible to make $1000 per month after a year of development, I'm not sure how likely it is.

Product development is risky. Certainly, you can use strategies like developing a "minimum viable product" to mitigate some of the risk, but even doing that can be a lot of work. So unless you are willing to take the risk that you'll spend a year of your time, and not have any revenue generating product, I wouldn't head down this path.