The Dark Sky Meter by DDQ helps you measure the night sky brightness with the press of a button. Get instant information about the night sky quality and contribute to create a global map of sky darkness.
Much cheaper than a commercial Sky Quality Meter.
Available for download now!
User comment: Fantastic! Settling the argument with my observing friends over which of our sites is better is worth the $5 all by itself. And if I win the wager for a beer, it will be like getting the app for free.
Jeff Morgan, Prescott AZ
Download the app here!