Perfect but for one fixable issue
HP just needs to update the app to properly use the new vector graphics like all the other ios apps. It feels a tad "crunchy" visually (because its using raster images) on an ipad with retinae display. Otherwise I LOVE this app. I use it multiple times daily - every day. I especially like the portrait mode simplified layout which I use 90% of the time. For the person who complained that its missing trig. You must be locked in portrait mode. Try it again - but allow the app to flip between portrait and landscape mode. you wont be disappointed.
Jam Row about
HP 15C Calculator