I think 6% is actually pretty sweet, I built a 1.0 for a startup from scratch while in grad school, and got all of a 0.5% stake, plus consulting fees. Usually a large slice of the equity pie assumes that you are taking a hit in the wallet now for something better down the road. I believe your developer felt like she was getting the best of both worlds.
Not only that, but the market it's based in - our poster's app happens to be in healthcare, which has its own 800-lb gorillas (large hospitals and pharmas) and its own smaller players too.
Obviously the poster thought that the app would become lucrative enough to justify a $160k investment. If the payoff looked really huge, you could justify being a little more stingy with the options. Just sayin'. (From the guy who doesn't have a lot of options because his app is in healthcare too)
