Calca 4+

Name: Calca
Price: 449 RUB
Rating: 4.9 (10 reviews)
Author: Krueger Systems, Inc.

Krueger Systems, Inc.

- 4,9 • Оценок: 10

- 449,00 ₽
- Включает встроенные покупки

Описание

Calca is a powerful symbolic calculator that gives you instant answers as you type. It solves equations and simplifies complex expressions - it's a computer algebra system in your pocket! It's also a rich Markdown text editor so that you can explain your ideas alongside your calculations.

Calca is perfect for professionals and students - anyone who works with numbers and equations. Variables and functions can be created with only a few keystrokes and can be manipulated with a rich library of operators and functions.

Calca updates as you type - just like a spreadsheet. You can declare variables, edit their values and watch everything update before your eyes. Since everything is calculated on the device - no network needed - you get answers instantaneously.

All calculations are stored as plain text so you can easily share them with other editors and move them from device to device. Calca has been designed to work with iCloud documents so all your devices can access your calculations - you'll always have the latest files ready for viewing and editing.

Calca comes with a suite of examples to help you get started covering topics from home mortgages to kinetics. All these examples are fully explained within Calca itself.

Are you still using a desktop calculator? Are you using the calculator with the giant buttons that came with your OS? Computers are much more capable than doing simple one-line arithmetic - put your machine to work with Calca!

Calculation Features:

• Variables `x = 42`
• Functions `f(c) = 9/5*c + 32` and even recursive functions
• Units `42 mph in kmph` and currency `¥599 in $`
• Solves equations (`x + 2x + 4x = 42`, what is x?)
• Matrices with inverses so you can solve linear equations
• Sum, prod, map, and reduce operations on lists, matrices, and ranges
• Trigonometry and complex numbers
• Derivatives of functions
• Logic operations and if statements
• Binary math (& and |) and support for binary and hex number (`0xA9` and `0b1010`)
• Keeps track of units (m, s, m/s, m/s^2, etc.) so you can verify your equations as you compute

Please visit http://calca.io to see lots of examples. Thank you for looking!

18 сент. 2020 г.

Версия 1.5.1

* Updated for iOS 14 and iPadOS 14
* New `mean` and `average` functions for easy data summary
* Fix iPad keyboard thanks to Jon Edlund
* Fix unicode (non-English and Emoji) input thanks to Ivan Savochenko
* Fix dark mode highlighting
* Fix currency updates

4,9 из 5

Оценок: 10

Very powerful, but needs a little polishing

I've tried a couple of simpler calculators before: Numi and Soulver. This one is a lot more powerful, naming just a few things that make it great:

- It's symbolic: instead of just calculating the result, it treats expressions as first-class entities — so you can solve equations, find function derivatives, etc
- It's functional: it not only has functions, it also treats them as first-class entities — so you can pass a function as an argument to another function (though this one probably doesn't make much sense for anyone who is not a software engineer or a mathematician, but whatever)
- It works with matrices, plots, has a ton of built in measurement units, etc
- Oh, and it supports mobile platforms and synchronizes your sheets via iCloud

That being said, there are some problems and enhancement options, that I hope the developer(s) would eventually give some more attention:

- The "undo" after inserting "=>" doesn't erase the computed answer, so you have to remember not to use it in these cases and just remove the text manually instead.
- There are missing currencies, like georgian lari.
- There's no configuration at all. I wouldn't expect some advanced customization, but simple things like changing the color scheme or fonts would be nice. But most important of all, vertical tabs!
- Would be nice if the scroll went down over the last line, so you don't have to look at the bottom of the screen if you are editing the last line.
- (iPad) Inserting numbers is broken if you are using an external keyboard.

Best of luck to the developer(s) and thanks for your work!

Офигенное приложение

Можно достаточно быстро строить графики, находить производные/интегралы, очень удобно делать цепочки вычислений. В общем приложение - класс)

Супер

Отличное приложение. Очень выручает!
Снизил оценку за проблемы с отображением кириллических символов (в версии для OS X с этим порядок).

Разработчик Krueger Systems, Inc. не сообщил Apple о своей политике конфиденциальности и используемых им способах обработки данных. Подробные сведения доступны в политике конфиденциальности разработчика.