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FREE Everyone android
Arnaud Brochard
Overall Satisfaction click me 94
Best calculator app I've seen outside of the real thing.
This is the RPN calculator you are looking for.
Just like my 48sx Thank you for bringing this to Android.
Thanks mate.
The best app in the market.
Fun & Engaging click me 92
Awesome emulator.
Awesome Calculator - 48SX.
I use it at work all the time.
Usefulness click me 100
Works great for everything I've used it for.
Absolute essential app.
Production Values click me 42
bring back old interface our make it selectable at least.
New graphics are wonderful.
Ease of Use click me 91
So convenient and powerful.
I like Free42 a touch better for simpler tasks.
Reliability click me 37
Updates & Support click me 73
Hopes developer release a version with full screen mode + gives instrucation in the.
Click blue bar for explanation of rating.
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 for a large program collection.

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

Best calculator app I've seen outside of the real thing. found in 75 reviews
Best scientific calculator I have seen in the play store. found in 10 reviews
Best calc app out there. found in 8 reviews
wonderful emulation of HP's outstanding scientific and engineering calculator. found in 6 reviews
Thank you for bringing my favourite calculator to my phone. found in 5 reviews
tough to use on my old myTouch 3g. found in 2 reviews
Now I just need to learn it 8. found in 1 reviews
I used to have this calculator when I to engineering school. found in 9 reviews
Cool app looks and acts like a real 48. found in 11 reviews
Greatest thing since sliced bread. found in 1 reviews
update: great on my GS2 as well. found in 1 reviews
Works perfect on my droidx. found in 1 reviews
Using the old skin with the timely update. found in 6 reviews
Fantastic HP48 Series Calculator Emulator. found in 3 reviews
This one really hits the mark. found in 2 reviews
Blast from the past. found in 3 reviews
My all time favorite calculator on android. found in 3 reviews
like in the old times. found in 4 reviews
Can't figure out how to work it. found in 12 reviews
Calculator doesn't seem to refresh always. found in 2 reviews
Fixed startup crash after update by uninstalling. found in 2 reviews
Fonts for lables are messed up on Dell Streak. found in 2 reviews
I wish that there was a TI 83 or 85 version. found in 2 reviews
just bit ugly but works fine. found in 2 reviews
It's nice but could use a few improvements. found in 2 reviews
but still haven't worked out how to load programs. found in 2 reviews
Having trouble it self closes on latest cyanogen mod 7. found in 2 reviews
but crashes on my Droid if i rotate the display. found in 2 reviews
Dont donwload if u dont know how to use a 48. found in 2 reviews
but when i tried to put in. found in 5 reviews
Exactly wat I needed. found in 2 reviews
Please give an option to select the old interface. found in 3 reviews
A nicer skin would be great. found in 2 reviews
If only I could figure out how to transfer my programs over. found in 4 reviews
but constant freezes since Kitcat. found in 1 reviews
Needs directions. found in 2 reviews
Freezes a lot but still good. found in 1 reviews
Doesn't even begin to work on my Galaxy Note 10. found in 12 reviews
Crashes and freezes samsung galaxy s2. found in 9 reviews
Was forced to remove the battery. found in 4 reviews
Needs bigger buttons and better graphics. found in 4 reviews
Locks up my Galaxy. found in 2 reviews
Tried uninstalling & reinstalling to no avail. found in 2 reviews
Crashes on the galaxy s2. found in 2 reviews
rated better for full screen.   rated better for original calculator.  
"This is the best RPN calculator that I have found for android."
"This is the nicest rpn calculator I have used."
"Excellent version of the old HP RPN calculators - and it's free."
"Does an excellent job of emulating an RPN calculator."
"So I went looking for a simple RPN calculator for my everyday."
"Simply the best full featured RPN calculator available for android."
9,444 total
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