My iPhone app screens

I got stuck for 90 minutes at the dentist office, so I decided to organize all my iPhone apps. First screen (left) is essentials, stuff I use every day. Second screen (right) is references and tools.

Third screen is "communications and entertainment". Fourth screen is the graveyard, for things I don't use regularly or can't get rid of.

I can think of worse ways to kill 90 minutes.