With close to 100,000 iPhone applications now available on the App Store, finding the ones the ones that you will actually enjoy and use can be difficult. There are other apps and sites that offer a resource for you to find and share popular apps, and even present customized recommendations, such as AppsFire, 16 Apps or Sidebar, which we recently wrote about here. But what about tapping into your social graph to help find the apps that are popular amongst your friends? Enter Chorus— a free iPhone app that helps you discover apps with the people you trust most – your friends. Chorus, which is developed by envIO Networks, is sort of like a mobile social network based around the apps that your friends have downloaded. The app features real-time feeds from your designated friends (those who have also downloaded Chorus and whom you have friended) displaying the apps they are downloading, and what they are saying about them in the app.