Only two depth stack
The stack with only two positions is worthless for an RPN calculator.
Awesome App
Had unbelievably awesome support from the developer. The app is packed with features that are so convenient to have right on my wrist, not to mention iPhone and iPad. Thanks for this app and true support.
Watch complication
Latest watch complication broken. Will not run
Definitely worth considering.
I bought this app hoping to replace the rpn app Pcalc on my iPad dock - and it has done that successfully. The reason is that on my iPad I’m very often trying to use the calculator in a slide over or side by side with another app. This app does not hog the entire iPad screen when it’s the only app that’s open. So, with the iPad in landscape mode it does a really great job with split screen or slide over. Calculator widgets have functionality problems and this app doesn’t have a widget - no problem.
The appearance is also very neat and clean, a very good looking design. I’ve had a bunch of different HP rpn calculators since the 1970’s, and now have no interest in apps that recreate those designs. The advanced functions of this app are quite good, sufficient for my needs and the conversion factor mode is really far beyond my need for a retired guy.
There is only one major shortcoming - memory storage. I use that quite often with pCalc and any other calculator. I think that most people who are rpn addicts likely have that same need. Without memory storage it’s a bit troublesome. With it it would be a a five star app for its practicality.
The appearance is also very neat and clean, a very good looking design. I’ve had a bunch of different HP rpn calculators since the 1970’s, and now have no interest in apps that recreate those designs. The advanced functions of this app are quite good, sufficient for my needs and the conversion factor mode is really far beyond my need for a retired guy.
There is only one major shortcoming - memory storage. I use that quite often with pCalc and any other calculator. I think that most people who are rpn addicts likely have that same need. Without memory storage it’s a bit troublesome. With it it would be a a five star app for its practicality.
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Works fine
I’m very happy to have this simple RPN-Calculator on my watch, works perfect for short calculations 👍
Y register is not displayed
Y register is not displayed on iPhone XR.
Clean Design... But need one one thing
Nice layout. Works well but needs one more thing.
It is very necessary to have an x(exchange)y function on the keyboard.
Many calculations need this capability to set up for a solution as RPN uses the x-y order for them....
Please add this to an update if you can.
It is very necessary to have an x(exchange)y function on the keyboard.
Many calculations need this capability to set up for a solution as RPN uses the x-y order for them....
Please add this to an update if you can.
Close to perfect
I love this for my watch it it could really use square root key
Works well on Watch and Widget
I have always liked RPN calculators more than algebraic. This is a fairly simple RPN calculator that works surprisingly well as a widget but also on the Apple Watch. It has a four level stack. It does have an unusual behavior where if the stack is full and you add up all the numbers the number that was on the top of the stack is repeated ad infinitum in the Y position. If you pay attention to what you're doing this should not cause a problem but I found it odd. I would like to see instructions included as well as sound effects in the widget so that when I press on the key there is a click or tone.
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Has problems
Not full screen. Keys are small.
Background around calculator bright white making it hard to see. Background should be black or calculator should be full screen.
Background around calculator bright white making it hard to see. Background should be black or calculator should be full screen.
Not working properly
Not working in Europe
5,50 Enter 6 + Result 11,0
5,50 Enter 6 + Result 11,0
Good Basic RPN Calculator
Simple RPN calculator that keeps me from having to reach for my 30 year old HP-11C most of the time. The ability to do unit conversions is worth the price by itself.
Excellent RPN calculator
Just as advertised - very clean, simple rpn calculator. It works perfectly, beautifully designed, no crashes. It has all the functions you are likely to need for scientific calculating. The unit conversion feature (actually, quite extensive) is a very nice extra. Suggestions for updates/improvements: have the calc float over the background wallpaper rather than having a completely white background, and ability to position to calc over the background and remember its position. This would be nice when iPad allows multitasking. A row of storage registers might be nice. Maybe showing more registers than the x and y registers is something to consider, but would probaby ruin the beautiful simplicity this calculator displays.
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Nach Update schon besser, aber....
Habe bei meinen diversen HP-Rechnern (abgesehen vom 48er aufwärts) immer mit 4 Stackebenen gearbeitet, hier stehen nur 2 zur Verfügung, außerdem finde ich keine Möglichkeit x<>y (Tausch der beiden letzten Stackebenen).
Getting Better
The stack looks like it has been fixed. I found that the tangent of pi yields a -0.00. This could be fixed but overall much better then when I initially downloaded the program. It has become my preferred calculator app.
Great Start
I had the same problem with the 1,2,3, E -6, but 1,2,3, +,+ did give me 6 as expected.
Basic Calculator with RPN
I downloaded this calculator for the simplicity of RPN and to be able to do simple financial equations with compound interest, NPV... There is no xy register swap key and since the stack is only 1 deep it can't be used for simple interest rate PV functions without writing the starting number down as it gets lost once you enter the interest rate you want to compound.
Nice looking, needs deeper register and needs a memory keys.
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Incomplete - Please finish it!
Good to see there is now a 4 level stack, but still needs a roll buttton and most importantly an xy swap key - useless without it!!
There is also a bug with the pi key - it replaces the x register - needs to push x into y before entering the constant.
v1.3もまだ問題があります
v1.3になって、ようやくregisterの数が２つから４つに増え、(4+5)/(1+2)のような計算ができるようになりました。
しかし、まだ他の問題が残っています。
1. 1E-2のような負の指数の数を入力できません。HPの電卓だと1 E 2 +/- として入れるのですが、それができません。
2. 分数の1と2/3も1.2.3 のように小数点を２回打つ事によって入力できるのですが、
1/2 + 1/2 を計算するために 0.1.2 Enter 0.1.2 + とすると、+無限 となります。
Nice app
Works good so far. It would be nice if it remembered the fix/sci decimal settings. Might be nice to have a key to scroll through the stack also.
Just got the latest update and the click sound needs to be able to be turned off.
Just got the latest update and the click sound needs to be able to be turned off.
