HP-48/49/50 emulation on iOS

[tcab]

I enjoy playing with the Emu50G - I think it’s the most professional of that series of calculator, though they all have that annoying keyboard input lag problem.

Another one worth looking into might be RPN 28x Calc for iOS which is a native app (no emulation), very snappy with an inspired user interface. It’s especially good on an iPad. More info and screenshots here.