HP67 Calculator

This is a brilliant app, I can't imagine the amount of work to do this app. Anyone who rates this less just does not understand HP67. I will use it - so far I don't find anything wrong. Thank you for writing this app, you are most respected.

At one stroke my paltry 'phone' has increased in value by an order of magnitude! I had an enduring love affair with the HP-67 many moons ago, and never expected to see (or hold!) it again. Especially not in such a useful incarnation. Now I won't miss my desktop when I go into a meeting. With a few suitable design/financial programs tucked away in my 'phone' I can deal with any semi-literate troublemaker! Thanks Mike! Where have you been all these years?

Absolutely a crappy display! You cannot read the answer. So, what good is this app?

My HP97 is still on my desk, but I don't usually sit at my desk. Now I have the HP67 on my phone and tablet. Found the save & load program menu. 35 years ago I was pretty adept at programming my HP97. Thanks for a great app!

Amazing implementation, not having seen one for 40 years it makes me want to get back into it. Display is a little small, but it looks exactly like the hp leds...thanks.

Vibration for haptic response annoying & power draining... Uninstalling now...

How do I get the instruction manual?

Memories good ones

Awesome emulator 4 HP-67

Great app. My HP67 died many years ago and this brings back so many memories. Not sure what the included SD15 diagnostic program is meant to do though.

I tested about 30 of the most popular scientific calculator apps, and none were useful for a land surveyor. This one rocks, old school.

Can't read font; not user friendly, specifically somehow I opened a (white) frame near the top if the screen and couldn't figure out how to close it.

At first pressed # keys, got nothing or wrong # in display. Figured out I had to press below the key! Honestly, other than a nice trip down memory lane, reminding me of my HP67 purchased back in the mid 1970s, I can't imagine ever getting used to this app, especially for doing complicated calculations and mathematical processes. Also I couldn't find any instructions, especially on programming and use of mag strips. My phone is a 2014 Droid inside a hard case. Maybe extra pane causes the key touch issue?

I still have my original on my desk at home. This app allows me to have it with me all the time. Thanks!

Thanks for creating this app. It's great and certainly replaced my HP Calc, which I lost few yrs ago.

There's no way to bring up the card menu on my LG phone so I can't save or load programs. Also, the email address for the author doesn't work for me so I can't report it.

Brought back fond memories of my HP-97, though had to refresh my memory with an RPN quick-reference and downloaded HP-97 manual! So nice to have a programmable calculator in your pocket (Galaxy S4). Where do I donate?

Great reproduction of the HP67. Please do one for the Hp45 in this format.

Just like the original! At least what I remember!

Bem pra engenheiro que deixo sua calculadora com alguém e não devolveram!

So easy to use

Way cool.

My only question is how do I get the key-press vibration back? Somehow I managed to turn it off and I want it back on! I really miss my old HP-67, so this is like finding a long lost friend. Regrettably the ratings only go up to 5 stars or I would give it more.

Great app. Now I can have my RPN calculator with me all the time

Way cool.

Very good work dev ! A quick suggestion: making the display digits segments a little bit thicker would improve readability !

Fix function does not work. Seems great otherwise.

On first look-great visual representation. I wish the display were a bit bigger on my Motorola Atrix HD (1280 x 700 HD). I will update after I have used it for a while.

good its awsome

thx for that app!!!

Keys are flaky

Horrible graphics

Works fine on Samsung Note now. I would like to see an option for a larger display font to make the HP-67 really useful.

Keys don't work at all

Works great on Samsung S4. Developer did a great job on this app. Of course I might be a little prejudiced, I'm his dad.

Just OK

Earlier versions had a fuzy display and very sluggish key response. Now the display is crisp and there is no apparent delays with the keys. I still think that the display should be expanded to show all of the stack.

This is a good emulation of an HP-67. The ONLY drawback is the inability to turn off vibration or sounds when using the app. I don't like the phone vibrating on every key touch.

I had forgotten how much good old fun these calculators were. Thanks for a chance to relive a nice bit of the past.

Numeric display now so small after update I can't read it? Reinstalled, no better! Please fix as I use this calculator every day. How about keeping calcs memory after closing?