As close as you can get to an actual 15c without a physical keyboard. Even the dimensions are the same (Galaxy S4 Active) as my HP. For $10 it is worth it if RPN is your thing. The only change I can ask for is to make the font on the virtual keys bigger or bolder- they're tough to read especially with the screen brightness anything less than 100%. Great app otherwise!
As close as you'll get to the real thing I still use my HP15C, but when I don't have it on me this app is darn near like the real thing. The main difference is that there are no real buttons to push, but the haptic feedback is helpful in that regard. In addition, the size of the calculator display on my S4 is almost exactly the same size as the actual calculator.
Good, except for display The calculator emulation is good, but the presentation and display is not as good as the Andro11c, which I also have installed (keys and display smaller, display not "Bolded"). A minor pox on HP for moving the pi key between the 11c and the 15c. I'm looking forward to installing it on my tablet, where the keys and display will be a little larger.
Works great. Works just like my old 15C. Obviously it's not as durable and doesn't have the tactile keys. But it's the next best thing to having my real HP 15c back. I owned three of them before moving up to the HP 32S and 48 GX.
Love this app! I wasn't a big 15c user, but I've always been a big 12c and 28x user. Seems the 15c is a great blend of the two. And this app makes it feel almost real. I haven't noticed any bugs or calculation flaws, so this is five stars for me.
HP15C Much like my original. Sometimes performance can be slightly sluggish - likely a function of my phone setup (Samsung Galaxy s5 ). Great app which I use a lot.
minor bug fix and performance optimization