RpnCalc Financial Calculator

For those of us who know that RPN is the only notation that reflects the way that we humans actually experience mathematical thought, and who remember RPN financial calculators fondly, this particular calculator app is the *only*. one worth considering.

The HP 12c was all you needed for a good estimate of complex financial products. This is even better. And you can amaze your office mates by using reverse Polish notation !

Perfect Financial/Scientific RPN calculator: like an HP12C/15C, but better.

Awesome RPN calculator. Been using for 7 years.

Every bit as good as my trusty 12C.

Just perfect

Unreserved appreciation and praise. The only negative review is someone who cannot make his phone work. I own and have used a HP-12C since 1976. I wonder what could be on HP's mind that they don't want to let Falk call this an HP-12C emulator -- It is an improved and modern 12C. Its existence and widespread use can only add to the considerable stature of the original.

I have been using this App for over a decade and have been using the HP-12C at my desk since that calculator first came out over 30 years ago. I no longer have to worry about leaving the physical HP-12C behind when I leave my office because the Falk RpnCalc Financial Calculator works just as well and takes no more room than my cell phone which I am carrying anyway. Thanks for making a great App and for supporting it through the years.

This is an excellent application, and the support is fantastic! As a bit of a calculator junkie (I even have one the the original Casio graphing calculator from the 80s), I have an affinity for them for whatever reason and this one is top notch. Plus, the developer helped me get through some issues with the Google Play Store and I am a very happy camper!

Dear Mr Falk, Thank you for your help in recovering the RpnCalc Financial app that I had previously purchased. It's a tremendous app and better than the HP12C calculator itself! May you have continued success in the work you are doing. And again, thank you your support. If I could give more than 5 stars I would! Have a blessed day! Sincerely, Aaron Bradford

Love this App. To me, it 100 times better than my old HP 12C. If you own a HP 12C, you owe it to yourself to get this plus you won't have carry around another tiny machine. It's "AWESOME" !!! :-)

I have been using a version of this app for years. I love having a full RPN Financial calculator with me all the time. It's even better than my HP 12C because it has a larger stack and it's always visible on the scree. It makes longer calculations so much easier when you can see the stack right there. And the few times that I've needed support, the developer has been extremely quick to respond and help out. I highly recommend this app.

I have a HP12c that I have used for years but I purchased this app a couple of years ago and haven't used the 12c since?this just feels better. Developer has done a great job was really helpful in getting app into my new phone

I have been using this app for years. As a Financial Advisor, I use it for on-the-fly calculations in client appointments all the time. In college I used an HP12-C and since then this has been my replacement. A must have for any financial professional.

If you need what a 12C does, buy this app and skip all the free ones. Don't over think it or waste your time. Buy the app and go to work. I've not found anything a "real" 12C will do that it won't.

I've been using a financial RPN calculator for about 15 years. They are, to me, so much simpler and logical to operate. This one on the Play Store is the best one available. It is fast, accurate and easily displays in either portrait or landscape mode. It is worth every penny charged. The author is solid and doesn't update just for the sake of updating.

I found this app many years ago and it has accompanied each new cell phone purchase I have made. It's emulation of an HP 12C has made it indispensable in my line of work as I no longer need to carry a separate financial calculator with me. Add to that tremendous support from the developer!

Long time user of this Rpn calculator and love it. Closest thing to a HP 12c in the play store.

Used the HP-12c through college and in finance since then and love it. Now I can leave the 12c at home and still have the features on my phone. Well done, Ed and thank you.

Best financial calculator app available. For only $4.99 you get exactly the same features as any financial calculator with the convenience of it being on your phone.

I have an original calculator on which this (may?) be modeled... This one from E Falk has 21st century features.

Fantastic app! Works perfectly like my college calculators I still have, which are as old as my wife. Highly recommend!

Great app for doing TValue calculations, calculate amortization, loan payments, etc. I have used this for years and it is a must have!

Great app, awesome developer!! Have used this app for many years. Best app of its kind!

Excellent app - exactly like a HP12C, but faster and without the limitations.

A quality calculator! Perfect for financial and other calculations

UPDATE: This is a great app. Can't live without it.

Best financial calculator for Android!

This developer is top notch. I have used this rpn financial calculator daily for years, relying on it for bond calculations and time value of money calculations. After email and text, it's my most used app. Highly recommended. Great app.

Excellent calculator. Just like my HP12c. Don't use it very often but very useful to have around when I do.

I've been using this application for many years, probably since first became available, 8, 9, 10 years maybe. I've consistently found this to be the best financial reverse polish notation calculator on the market, this includes the HP12C; and recommend it highly, five stars, and would give six if I could :)

This is a great reliable app! The developer also provides excellent customer support based on recent experience. I really enjoy having the HP Business calculator interface on my smartphone. It's truly the best of both worlds on a single device.

for preserving the techniques, algorithms & habits you may have formed while using a popular handheld financial calculator. This turns my Pixel XL into that old friend every time I launch the app.

I use this app as much or more than any on my device. Much better than the HP version I have on my iPad.

I'm a long time HP RPN calculator fan. This is the best RPN calc out there.

This is a great application. I have been using it for a long time.

The only calculator I use. Highly recommended the publisher is a great guy too

Superb app. Highly recommended. Sorry for the hoops HP made you jump through.

This is the best financial calculator in the Play Store. It has all the functionality of the 12C and then some.

If you prefer RPN then this is the best financial calculator on the market