A new Appcelerator study (PDF) shows that Android has almost completely caught up with the iPhone in developer interest. Those "very interested" in Google's mobile OS shot from 68 percent in January to 81 percent this month and are just a short distance away from the iPhone's 87 percent, which hardly moved in the last three months. The sudden equality likely came from many developers settling on Android as the "second platform" they write for, although researchers noted that the iPhone still had a safe lead.