i41CX App Reviews

This works flawlessly, and doesnt lose its memory or require occasional repairs the way my actual HP41CX does. I love it.

I love this app and have it on both my iPad and my iPhone. I have the real thing sitting on my desk, but dont have it with me when Im out shopping. Since the prices here are all in Thai Baht, I need it to convert. Keep up the good work.

Works as good or better than my old 41c.

For those of us old enough to remember the heyday of the 28S, 11C, 15C, and the 41C[VX], this is a very nice emulator of the 41CX. The one thing that would make it better would be a native iPad mode.

Best app ever for an iPhone. With this app I have been able to write several programs quickly to solve repetitive things I do all the time. This RPN calculator has been improved nicely to even allow more complex problems to be solved. It is very easy to use. You do need to under RPN but once you do this app is the best. Text prompts are also possible...

Great app. I had my first 41C in 1983. I wish the developer would create the survey PAC app.

Great app. If you like HP calculators youll like this app. Worth the price...great job AL Software!

Not only was the HP41 the best calculator ever, this app is the perfect reproduction of it. The thing that really impresses me is that the app creator continually maintains it for new iOS releases, fixes any (rarely found) bugs and adds features. Ive used this app since I bought my iPhone 3G and have never had a problem. Highly recommended!

This is a good, trouble free app that emulates the classic HP-41C calculator very nicely. I prefer it to the standard calculator app on the iPhone.

Works just like my old calculator, except from my phone. I wished they had changed the original digits, because they were not easy to read to begin with.

Looks great, fast, programming is spot on and continuous improvement.

If you loved your hp41c and have been missing it, here it is. This is an exact replica of that greatness and it is perfect. If you do not know 41C but curious about rpn, this is it!

This is a wonderful app that both looks and feels like the HP41CX. I ended up getting some in app upgrades, and may have chosen the more expensive i41CX+ had I known the app was this good. It is especially useful to people who have used the HP41 series calculators. Very helpful tech support!

I have owned and used HP41CV since early 80s and HP41CX since mid 90s. I still use them daily. Had to scrounge everywhere to keep a working model going. Although I would still prefer the feel of a physical machine, this app is absolutely fantastic and I use it all the time. It has performed flawlessly and is great fun since I now can have the calculator at my side to address, or analyze the world around me. It looks good, it works good and its a blast to have such access. 3/2015 Update: OMG! After using this IOS version on my iPad Air 2 for awhile, I am beginning to enjoy the IOS version more than my original HP (I own 3) versions.

I grew up with an HP41 CV through 4 years of Physics classes. This calculator is the closest match and does everything that I used to do

When I purchased an HP-41C in 1980 (?) it was the most advanced calculator on the market. Programmable and using RPN logic, I enjoyed developing programs for science projects. This version duplicates much of the original device and adds advanced capabilities. Though replacing a couple of algebraic based calculators, this i41Cx is my choice along with a graphing computer.

I regularly use a HP calculator for engineering calculations, and once I got used to Reverse Polish, Ive found RPN simplifies complex string calculations. This app provides a pretty much flawless emulation of the great HP 41CX. Its great for quick calculations, rectangular/polar conversions, etc. AND - I dont have to carry around a separate device - its on my phone. If you dont need to graph functions (and most of us rarely do) AND like RPN, this is a great app.

When Im not at the office where my 41cv is I can have my preferred calculator with me as an app. Nice J O B !! I purchased my 41cv in 1979 and still use it.

Very nice!