iPhone Screenshots


11C Scientific Calculator is the most accurate and precise emulator of the HP 11C RPN scientific programmable calculator available for iPhone and iPod touch. It uses the same RPN (Reverse Polish Notation) entry system and supports the same mathematical functions as the HP 11C Scientific Calculator.

**** Features ****
• Hyperbolic and inverse hyperbolic trig functions.
• Probability (combinations and permutations).
• Factorial, absolute, integer & fractional.
• % change, and % of total.
• Random number generator.
• Index register for indirect operations.
• User mode to run program labels.
• Cumulative statistical analysis & Linear regression.
• Hour minute second conversion.
• Polar, rectangular conversion.
• RPN entry.
• Programmable.
• In-app manual, quick start help, and in-app support access.
• Option to disable/enable key click feedback sound; and
• Easily switch between US and EU data format/comma or period as decimal point
• Automatically save/restore settings during app close/start.
• Click menu key to see more options.
• More …

*** What People Say About It ***
"Miss your old HP 11C RPN scientific calculator? Then give this utility app a try. It mimics the look and feel of that classic number cruncher in every way possible. It uses the same Reverse Polish Notation entry system and supports the same mathematical functions. There’s even an in-app manual that features tutorial videos in case you’ve lost your touch." ---AppAdvice.com

"This app supports complex numbers, intense calculations, matrix operations, and many other features that I don't have room to list. " ---AppGratis.com

**** Support ****
Feel free to contact us if you need any support by visiting www.vicinno.com or simply email us at support@vicinno.com.

**** Stay tuned ****
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What's New

Version 1.63

iOS 9 optimization

Customer Reviews

4.6 out of 5

39 Ratings

39 Ratings



The image of the HP11 is charming, but on my 5s, the letters on the 'g' functions that were on the beveled surface of the physical keys are very small and hard to read. On my HP11 I could just tilt it a bit, but not on my iPhone. This might be fine on an iPad, or a 6+, or for younger eyes than mine, but I think this app appeals mostly to people who used the HP's 30 years ago.
There is no means of changing the appearance, which is landscape-only. The HELP takes you to the diagrams on the original back, with no means of expanding them.
I'll delete it, and go with one of the many choices that offer screen-appropriate keyboard layouts, some free.

I love the 11C SciCalc


I have owned the 11C SciCalc before we had smart phones or apps. I got the original 11C calculator app on my iPhone 4s. But when the went to iOS 11 I couldn’t use it any more the creators of the app did not update the app. Like a lot of my older apps. I got this one & then they put the 11C & 12C together & I had to download that app. I love the reverse Polish notation that the 11C uses & won’t use another one. Great calculator!

Beautiful App


I like this app a lot and it works well. It appears to be a faithful reproduction of a calculator that I still own and use in my office. I appreciate having it on my phone. Only glitch is that it froze once for a day or two when it would have been very handy to have it working. No problems since, still bit uncertain when open it.


Vicinno Soft LLC
7.6 MB
Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.
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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