Droid48

Arnaud Brochard

About this app

Emulator of the HP 48 scientific calculator, using RPN. Port of the X48 project (sources available on github). HP48's "grayscale mode" cannot be emulated.

Visit www.hpcalc.org for a large program collection.

Cool tip: tap the HP's LCD to show/hide a simpler numeric pad !

Ratings and reviews

Keys are much more responsive than Emu48, but this emulator fails to save the state of the machine. A Google search indicates this may have been intentional, requiring the paid version in order to save the state of the emulator. Fair enough, but I see no play store option for a paid version... super annoying to not be able to save my custom unit conversions. All I really hold to be the single feature of my HP48GX is its unit conversion stuff, all else I do on a PC now....

The only calc app I use, but it no longer saves memory. It always used to. I'm not sure when it stopped saving. Just noticed it today and I'm really bummed. I suspect there is a permissions issue somewhere. Google recently changed some requirements for apps and maybe that has bitten Droid48. Hopefully the developer will see this and comment. I'd give it 5 stars if it worked again.

I seldom write reviews. This app takes me back to the 90s and using RPN in physics and chemistry...and of course calculus, etc. I wish this was something still widely used as it is so much more efficient using RPN to perform calculations. My HP 48s recently gave up the ghost after almost 30 yrs of reliable use. y2k was the worst thing that happened to it. it died from battery corrosion that I should have had more patience in cleaning out. at least I saved the book. this is a true replacement.