Thanks! (original author here). Incidentally, there's ANOTHER industry conference this weekend. I got 500 business cards printed up (double sided with both my apps) to hand out. Other than that, Facebook is the only other real "marketing" I've done.
Keep in mind that this is 95% women in this industry, so I didn't expect them to be as "tech savvy" than if I was at a computer conference or something.
I believe that the personal touch of saying, "I built this for someone like you" has a HUGE impact on how people feel about your brand and your app.
The best marketing you can get is through reviews and word of mouth. In my mind, that money is better spent on improving the product.
That's my next mountain, so to speak: how to market my apps. Still scratching my head on that one.