11C Scientific Calculator App Reviews

I Have used the HP 11 C calculator since I was in college. I really enjoy simplicity and accuracy. This iPhone version excellent seems to be same as my calculator and always available because it’s an app. I love it and use it a lot!

Great product. Works just like my old HP. thanks for sharing it. There have been many times that it has been very handy. Thanks

This calculator works well on my iPhone. The RPN format is great and I use it in my laboratory and at home.

Great except that the manual does not work. You only get the first few pages. The others do not appear.

Easy to use if one if familiar with RPN or HP Calculators! A must have!

I still have, and occasionally use, the HP11C I bought in 1986. I’m very glad to have this app on my iPhone 12 with iOS 16.1.1. The “click” on every keystroke is a good substitute for the old HP11C “feel”.

My 1981 is still working like new, but sure doesn’t look it. This app makes my iPhone and iPadmini just as good as the real thing. For several weeks I did all kinds of stuff on it to see if it had any flaws/errors. Zero !!! and I love it as much as my original. One minor annoyance; when I hit prefix to see all digits, it just flashes the digits too fast for me to read. My old HP showed it as long as I held the button. But still a 5+++ Thanks for the exceptional re-creation.

Best scientific and engineering calculator ever made.

I purchased this HP 15C calculator app becauee I've used the original HP 11C, since 26th September 1986. It is fun to use on my iPad.

What’s not to like?

Great app. I’ve used an 11C since the late 70’s and still use my original. I guess they made them too good. This app allows me to use it whenever I have my phone

I’ve used the 11 C all my professional life. I was delighted to find the emulator so I don’t have to lug the actual calculator around. Thank you so much for providing this great tool.