EDIT (Feb 2015): please note this answer is almost 4 years old and provided info may not be accurate anymore.
Well, it’s not real-time and depends on the traffic to their servers. Basic events are shown in about 15 minutes, but sometimes between 30-45 minutes.
Similar question was answered here.
If real-time is a must or you need other features, try this 7 Solutions for Tracking Mobile Analytics. It may be a bit outdated but mentions key providers like AdMob, Google Analytics, Bango, Localytics and Flurry.