I just made a similar step. My first app is yet to be approved (it got rejected because I accidentally covered the Google Logo in the Google Maps API), but my opportunities for contracting work have skyrocketed (namely, I went from no work to more than I can handle alone). It's a bubble for sure, but as a poor student, I'm ok with some supplementary income. Especially since professional iOS devs charge so much, it's creating a nice niche for college students willing to work for less than $150/hour.