RPN-70 HD

This app not only reproduces the HP-70 but improves upon it by adding options for the display and making excellent use of iPad's computing power. As if that's not enough, it's also an education! – It comes with comprehensive examples which cover every imaginable purpose. Huge thanks to the developer whose perfectionism is not lost on me. P.S. One tiny improvement (for me) would be an option to choose a plain background.

Beautiful Emulation of a classic. I love this app and it’s iPhone companion as well. Wonderfully designed and true to the original.

Hard to find a decent calculator on iPad, try this one.

Why assume that everyone will use this in portrait mode? No way to change it that I can find. Deleted...

I don't normally write reviews but RPN-70 is just too fantastic to not get excited about. Apple should list this app under their Education category in the App Store and make it a must have for every college bound students. It is the best HP emulator in the market. If you are a fan of HP calculators, this is it, and it is free!! Thank you CuVee. Now is it too much if I ask for an iPhone version?

Exactly what I was looking for. A real HP RPN machine.

This is a really cool Financial calculator. Just like using the original HP-70. Accurate to the penny. Hmmm, I wish they'd come out with a version for my i-Phone. Happy to pay for it. Great job!

Mr Kunz is a master designer. I just got his HP 45 emulator which too is fabulous. Very thoughtfully designed, complete with crisp instructions, useful settings. It's a joy. I never had an HP 70 but looks like a simple, elegant product. Thanks!

This app is both functional and beautiful. The calculator looks like the real thing and the animated buttons look like they actually move. The display is also an extremely accurate simulation of the actual HP-70 display. The paper currency background on the iPad is a very nice touch. The button click sound is cool and it can be turned off for silent operation. While this reviewer has not tested all the functions, the app has been tested thoroughly by the developer against an actual HP-70. A very good simulation of a very powerful, classic, HP business calculator.

I had an HP-70 and used it a lot. From the few calculations that I made, this app seems to work just as it did.