This is the most reliable emulator app for HP 12C Financial Calculator on iPhone, iPad, and iPod touch, which behaves exactly like, and supports all the functions of HP 12C Financial Calculator.

5 Stars: "Works like the original but more handy" -Jen, CFA, MBA, Financial Analyst

5 Stars: "Best 12c out there. Nice to always have it with me." -Tim H. Nelson, Finance student

5 Stars: "Turns your iphone into a 12c with helpful features not in the original" -Hannah

5 Stars: "Retired my very experience HP several years ago and haven't looked back. Only use this app now." -Yan07

5 Stars: "I use it on a daily basis and no longer have to carry my financial calculator with me." -Debbie, Financial Advisor

5 Stars: "couldn't be a better app. Stable user-friendly and the exact replacement for my physical Hewlet Packard calculator." -Gatortag

This app uses the same RPN (Reverse Polish Notation) entry system, and adds in big improvements for mobile to guarantee the best user experience and performance.

**** Highlight Features ****

• Time value of money TVM
• Cash flow analysis NPV, IRR
• Amortization
• Bonds
• Depreciation
• Loan payments calculation
• Statistical analysis
• Date arithmetic
• RPN entry
• Programmable
• Support auto-rotate and can be used in both orientations: landscape and portrait.
• In-app quick start help with one click access.
• Options to turn on/off audible key click feedback, and
• Switch between US and Europe number fomat/use comma as decimal point.
• Automatically save/restore all settings.
• In-app online support.
• Click menu key to see more settings.
• Long press to copy the calculation result to the clipboard and paste it anywhere.
• More ...

**** Support ****

Feel free to email us at

**** Stay tuned ****

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What's New

Version 2.530

icon redesign.

Ratings and Reviews

4.5 out of 5

189 Ratings

189 Ratings

Excellent 12C financial calculator

Shuttled CFI

If you’re looking for or useful functional financial calculator with all the features of the traditional HP 12 C this is the calculator to invest in. I’ve been using a 12 C for decades from Hewlett-Packard. The original handheld calculator’s were high-quality superior products with innovative functions and quality workmanship. The latest versions are not likely to last very long physically and the workmanship and quality have become profoundly sad. I now want one device that works on my iPhone and iPad that I use throughout the day. The HP products are not supported with updates with the changing operating systems from Apple. They have annoying key clicks that you can’t silence without turning off all the sound on the iproducts, how pathetic is that. This is the calculator to buy! It’s supported with the latest operating system, there are no annoying key clicks you can’t turn-off, and the full functionality of the calculator is available no matter which way you turn your device to use it. The only complaint I have is the delay when you open the product because the developer runs an ad... but I am more than satisfied with the functionality of the product. Recommend you give it a try before wasting money on HP products that are no longer professionally supported.

My all time favorite calculator!

Henry Wallace Woodchuck

This is a near perfect implementation of the HP 12C calculator, which I have been using since its inception. I have this app on my iPhone and on my iPad, and I have an actual 12C in two places in my home, so clearly this is my go to tool for anything financial. I really appreciate that the entire user's manual is included as it makes it very easy to refresh my memory on how some of the functions I don't use frequently work. And, I had to smile when the app was re-named to "RPN", because in brought back a memory of my then friend Donnie B., who was of Polish ancestry, explaining in great detail that the key sequence on the 12C was known as "Reverse Polish Notation". Congrats to the developers, this is a very well done app!

LaurenF in NYC


I am completely unable to be “conversant in calculator” unless it’s an HP-12C or other like HP model w/the reverse Polish notation deal.. you know.. 1 Enter 2+ to get 3, because I used it in school and then later in finance jobs.. and I’m hopeless without it.

This app duplicates EXACTLY all of the familiar functions AND looks exactly like my HP-12C which I usually don’t want to have stuffing up my purse or even suitcase. So! I ADORE this app! It’s perfect! And of course, it’s in my phone ready to roll, even if I only need to add say 5 numbers! Easy peasy! But I can also do %change questions in a sharp. I love it! 5 stars+!!


Vicinno Soft LLC
21.3 MB
Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese
Age Rating
Rated 4+
© Vicinno Soft LLC, All Rights Reserved


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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