Pretty clearly, the OP is *saying* iPhoto, but *means* Photos (nearly, but not quite, the same program). That's definitely the control panel for Photos, which is a 1.0 program and has some growing to do. If they had iPhoto before, it should still be there in the Applications folder (but not on the Dock any more) and may still be able to be opened, if it had been kept up-to-date. So they can use that until Photos gets its first big update, which I suspect will happen with El Capitan.