I spoke to a lead developer from one of the biggest Android camera apps that sold to a big company. They said that they realised the Android market isn't nearly as big as it's made out to be because most Android users don't even install apps. They have an Android phone as it was running on the cheapest phone they could get and just use it for calls. Many don't even have a data plan.

They were featured on the Android market multiple times but couldn't get the traction of an Instagram, etc. They believe in real terms iOS and Android are closer in terms of actual users that would want to install apps.