RPN Anywhere

Name: RPN Anywhere
Price: 0.99 USD
Rating: 4.5 (28 reviews)
Author: Hiroki Kawakami

Bring RPN Calculator Anywhere

$0.99

28 Ratings
Ages

4+
Years
Category

Utilities
Developer

Hiroki Kawakami
Language

EN
+ 6 More
Size

4.6
MB

This is a simple RPN Calculator which can use on iPhone and Apple Watch. *** Important! *** This calculator uses reverse Polish notation for input, and the operation method is different from a normal calculator using infix notation. If you don't know about RPN Calculator, you should not purchase this app. How to use - All devices > Green up-arrow is ENTER button > Stack size can be changed at Setting Screen > Settings button is gear icon in keypad > Can change number format from Settings. - iPhone / iPad > Stack view is scrollable and can show all values in the stack > To delete a value in the stack, swipe left on the value in stack view and tap Delete button. > To delete last typed digit, swipe right on stack view > Swipe action can be modified at Settings Screen > Programs trace key operations registered in Program Settings Screen > Setting button is replaced as other actions button while editing programs - Apple Watch > To show values in stack, swipe down on anywhere on the screen > To back to main screen from stack view, swipe up on the screen > To show scientific operators, swipe up on the screen > To back to main screen from operators screen, swipe down on the screen > Stack view and program view is scrollable with digital crown > To delete last typed digit, swipe right on anywhere at Main screen > Program view shows all programs registered in iPhone. you can't register new program on Apple Watch

Ratings & Reviews

4.5

out of 5

28 Ratings

Great RPN Calculator!
06/10/2022

UnclBuck
If you're looking for a simple RPN calc that features keyboard input that makes sense (and/of is customizable) compared to the default calculator (in RPN mode) then get this calc.The only things I wish it had are a few more GUI keys. An EE key in "basic" mode would be nice, and more stack control keys (Roll up/down, Drop) in both modes for when you want to be lazy and only use the mouse. The "scientific" mode already features an EE key and thanks to the programming function I added the stack control keys as programs. Programs appear as keys below the display starting at the left, I added a couple blank programs with spaces for titles to move my stack control keys above the numeric keys. It's almost perfect!
Great RPN Calculator!
06/10/2022

UnclBuck

If you're looking for a simple RPN calc that features keyboard input that makes sense (and/of is customizable) compared to the default calculator (in RPN mode) then get this calc.The only things I wish it had are a few more GUI keys. An EE key in "basic" mode would be nice, and more stack control keys (Roll up/down, Drop) in both modes for when you want to be lazy and only use the mouse. The "scientific" mode already features an EE key and thanks to the programming function I added the stack control keys as programs. Programs appear as keys below the display starting at the left, I added a couple blank programs with spaces for titles to move my stack control keys above the numeric keys. It's almost perfect!
Best practical programmable RPN iOS calculator
11/07/2020

lethall55
Though I am eager to give this app 5 stars, I bought this for use on my Series5 watch but find that there is a bug with WatchOS 7.1 which won't let me swipe to get back to main from the function screens. Unfortunately, the app support page is not in English, so I don't know if there's a workaround.So why did I give it 4 stars even though it has a debilitating bug? It is unapologetically RPN. The layout and functionality isn't perfect; but it is the most practical design I have seen for writing useful scientific/engineering programs on an iOS device. The layout and functionality on an iPad is stellar.I will definitely keep this app hoping that the watch bug gets fixed. It is very much worth it's price.
Best practical programmable RPN iOS calculator
11/07/2020

lethall55

Though I am eager to give this app 5 stars, I bought this for use on my Series5 watch but find that there is a bug with WatchOS 7.1 which won't let me swipe to get back to main from the function screens. Unfortunately, the app support page is not in English, so I don't know if there's a workaround.So why did I give it 4 stars even though it has a debilitating bug? It is unapologetically RPN. The layout and functionality isn't perfect; but it is the most practical design I have seen for writing useful scientific/engineering programs on an iOS device. The layout and functionality on an iPad is stellar.I will definitely keep this app hoping that the watch bug gets fixed. It is very much worth it's price.
Great app if you prefer R.P.N. But…
01/06/2023

brentwalker
Have been using this app for several years and it is my go to calculator. But one thing is missing. Can you please add a number storage for number recall? Like a memory 1 and Memory 2 button. The stack is great not often I want to perform several different operations on the same number.
Great app if you prefer R.P.N. But…
01/06/2023

brentwalker

Have been using this app for several years and it is my go to calculator. But one thing is missing. Can you please add a number storage for number recall? Like a memory 1 and Memory 2 button. The stack is great not often I want to perform several different operations on the same number.
Almost perfect
07/31/2025

MisakaImouto
This is by far the best Apple Watch calculator app, period. Unfortunately there seems to be a bug where the programs you create on the iPhone do not sync to the watch. Even with this bug, this is still well worth buying over the Lite version of this app.
Almost perfect
07/31/2025

MisakaImouto

This is by far the best Apple Watch calculator app, period. Unfortunately there seems to be a bug where the programs you create on the iPhone do not sync to the watch. Even with this bug, this is still well worth buying over the Lite version of this app.