One of the best
I looked around for quite a while for a good RPN calculator. Then I found this one! I have it on my first page of apps. It's my goto calculator. Very satisfied.
Excellent app.
If you are used to RPN calculators, this is the app for you. I used an HP 48G for years and struggled with online calculators. This app. Was an answer to my concerns. Works like a 48G.
Love it
I've been using my HP15C and RPN since longer than my current students have been on the planet. This was one of the very first apps I purchased when I got my phone a few years back. Great app. Thanks to the developer for the free update. Highly recommended.
You need this app!
If you are a professional in any field which requires complex calculations, you need this app. I use it constantly.
Great app!
Can't think of anything else I'd like it to do.
Best RPN calculator
Thank you for the update. The look of the interface is beautifully done and the app will live on!
Been using this app for years and it was breaking my heart that it might not survive the next iOS update. I think all of the changes are excellent, and yet the look and feel of the calculator are maintained.
Thank you, and keep up the great work.
Been using this app for years and it was breaking my heart that it might not survive the next iOS update. I think all of the changes are excellent, and yet the look and feel of the calculator are maintained.
Thank you, and keep up the great work.
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Best ever calculator
Love it. Use it everyday. Get it now if you like RPN
Useful update to an excellent app
The help button (?) is well thought out as is the calculator. I've installed a number of calculatotrs and removed most but there are two calculators that i will not remove: allRPNCalc and PCalc. If you want to transition from an algebraic calculator to an RPN calculator, start with PCalc and when you are comfortable install allRPNCalc.
By the way, RPN is a superior logic system because when you press an operator button (+, -, X, /, square root, sine, cosine,...) an operation takes place immediately. That is not the case with an algebraic system. Sometimes an operation is delayed, sometimes it takes place immediately.
By the way, RPN is a superior logic system because when you press an operator button (+, -, X, /, square root, sine, cosine,...) an operation takes place immediately. That is not the case with an algebraic system. Sometimes an operation is delayed, sometimes it takes place immediately.
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RPN
Use it all the time. Excellent app.
Don't leave home without it
I consider the program of the MOST valuable ones on my iPhone...and wouldn't leave home without it. My wife doesn't understand why I need RPN for routine math, not to mention financial calculations, trig functions and statistics...but I do! When a recent "update" glitch, now resolved, left me without the program for several weeks, I realized how much I missed it, as I found myself trying to open it several times a day. Ultimately, getting it again operative, once I found the instructions on the developer's website, proved ridiculously quick and easy. A particularly nice feature for the Financial section is its nearly automatic generation of a full amortization or depreciation schedule. The one feature I would like to see in the next version would be operation in both the current vertical but also, the horizontal mode, the latter the way one uses the fabled HP11C and HP12C, which I have in the hardwired versions, but which I no longer carry, as allRPNCalc makes them superfluous, rather like a DC-3 in an Airbus 380 era.
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