The IVs for both stocks' options have been steadly increasing for the past two weeks in anticipation of the earning release, from below 25% to close to 40% now. The gain that comes from 1% IV increase can easily compensate the loss from $1 price drop.
I wouldn't call a $1.00 movement in GOOG or AAPL as a drop, more like flat trading. No IV increase today ..... both call and put options went down to day.