# 104 RPN Calc

## Info

104 RPN Calc is a calculator licensed under the GPLv3. That means you can install it for free and enjoy its features:

• ☞ Basic operations ( + × √ … )
• ☞ Usual functions ( floor exp factorial log x̅ Σ Σn … )
• ☞ Trigonometric functions ( sin acos tanh rad→deg … )
• ☞ Extra functions ( surface of triangle or circle , hypot , quadratic equation … )
• ☞ History saver to go back and forward ( ↶ ↷ )
• ☞ Dragging numbers to reorder them in the stack
• ☞ Support for quite big numbers

&& AND &&

• ☞ No nonsense, no cryptic buttons, not an ugly calculator anymore
• ☞ Well, the hyperbolic cosine might be excesive nonsense and I've never used it in real life, but it's still included because it gives a professional air to the calculator
• ☞ The cuadratic equation solver, that does rock
• ☞ And the golden ratio, useful when you want to cut rectangles of paper and need them to be aesthetically pleasing. I mean, φ² - 2 = 1/φ, and this calculator has that! You can't do the same with π and e; e^iπ = -1 lives somewhere else

This calculator uses the Reverse Polish Notation to perform the calculations. That is, if you want to get the surface of a circle with radius 104 you will do:

`S = PI * r²`

or even easier:

## ❮ Quotes ❯

• Rachid Shirazi:
I use it everyday at work.
• Ezra Kabbah:
One of the best RPN calculators I've tried. Simple but powerful.
• Chloe Rivera:
Its layout and functions suit my needs perfectly.
• Vince Dubois:
I once used the default calculator on Android. No more!
• Mia Heikkilä:
I've seen other calculators on the Google Store but they're bloated with things I never use or come with adds. I like this one.
• William Wilson:
Wonderful.
• 建刘:
雞肉飯和面, 請