IPad Pro requires update to app for HP12c and HP19BII
I have used HP Calculators since 1973-4 initially HP97 I think. Having it available on the iPhone and iPad is sensational. However my new iPad Pro will not open. The app motive is on the desk top but when actioned it turns screen to portrait shows black screen with HP logo and then returns to the desktop. Also in transferring to ne iPad Pro I have lost the anniversary model. 😩