Around 8 months ago, StartApp hit around 150 million downloads. Now it has hit over 1.5 billion downloads. StartApp is a mobile ad company that is embedded in over 70,000 apps. StartApp is not as large as companies like AdMob, Millenial Media, or Inmobil, but it is still quite a bit of traction.
StartApp offers search ads, text ads, banner ads, rich media ads, and interstitial ads. StartApp also provides a 3D offerwall and exit ads when someone is leaving an app. StartApp also said that all of their ads are shown to 100% non-incentivized traffic, which means that you may not necessarily get in-app goods in exchange for watching an ad. StartApp is currently available in Android only, but they will be launching on iOS soon.