Holy crap. Pre-launch, so no revenue stream? $25k across 13+ people, plus office space? If you split the 25k evenly, that would be $1.9k each, or a yearly salary of roughly $23k.

What kind of developers are you able to hire for that paltry sum?

In SF -- We spend $30k/month on salary/benefits/taxes for 4 people (not including rent and other expenses), and even then we're paying below market rate. Our other expenses, including rent, add up to $4k, and we try to sock away at least another $10-15k every month.

Of course, this also isn't a "burn" rate. We've worked hard to build a business the old-fashioned way -- by making money with which to pay ourselves.