Excellent!
Great to have an HP 15C again. Ive been really bummed since my original calculator crashed. The layout is perfect on the iPad and the "keys" are perfect for large hands. Note: you have to hold the iPad in landscape orientation to get the full 15C layout shown on the left above (with trig functions, etc.). If the iPad is held in the portrait orientation, you only get the basic arithmetic operations (shown above on the right). Its not immediately obvious at first how to switch the visual modes.
Console RE about
HP 15C Calculator