The core of the iA91 is very similar to $100 clock radios iHome has released before. You receive a nightstand- or desktop-friendly unit with two built-in alarms, an AM/FM radio tuner, and a large black-and-white numeric clock face with a smaller but still readable calendar date below. Like all other iHome docking alarm clocks, iA91 can operate entirely without an iPod or iPhone plugged in, using a series of buttons on its top and back for controls.…