Calca1.7.2 - App Store

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!

Version History * New binary shift operators (like C's)
* More detailed reason if Apple Intelligence fails
* Fix toolbar colors when editing documents 1.7.2 10/17/2025 This version fixes links to document sections

Version 1.7 Changes:

* Apple Intelligence Integration: Calca now uses Apple Intelligence, leveraging on-device neural networks to answer =? queries. This means your data stays private and secure—no more sending queries to external services. Enjoy powerful, instant, and private calculations and data lookups, right on your device.

* Updated for iOS 26: The app is fully updated and optimized for iOS 26, ensuring the best experience on the latest devices.

* Performance and Stability: Numerous improvements and bug fixes for a smoother, more reliable experience. 1.7.1 09/22/2025 * Apple Intelligence Integration: Calca now uses Apple Intelligence, leveraging on-device neural networks to answer =? queries. This means your data stays private and secure—no more sending queries to external services. Enjoy powerful, instant, and private calculations and data lookups, right on your device.

* Updated for iOS 26: The app is fully updated and optimized for iOS 26, ensuring the best experience on the latest devices.

* Performance and Stability: Numerous improvements and bug fixes for a smoother, more reliable experience. 1.7 09/16/2025 Support for iOS 18 1.6.1 03/11/2025 * 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 1.5.1 09/18/2020 * Updated for iOS 11 and iPhone X
* Fixes the dreaded "bouncing text" bug 1.5 10/19/2018 * Plotting! Now you can interactively plot functions and data.
* New "Dark Mode" is easy on the eyes.
* New 3D Touch actions to preview documents
* Tuned for the iPad Pro
* Newly Patron supported! 1.4 03/21/2016 Updated for iOS 9 1.3.1 09/17/2015 Updated for iPhone 6 and 6 plus
iCloud fixes 1.3 07/21/2015 • New thumbnail display of calculations
• Improved cursor movement and scrolling
• x-callback-url support
• Many bug fixes and improvements! 1.2.2 06/01/2014 • Redesigned for iOS 7
• Dropbox storage, Folders, and Printing
• Left and right swipe gestures for editing
• Powerful unit and currency conversions
• Control output precision and number grouping
• JSON syntax for data
• Summing definitions to make lists easier
• Many bug fixes, new examples, and so much more! 1.2 11/01/2013 * Fixes bug preventing iCloud documents from showing 1.1.1 07/25/2013 * Fixed bug where .md files weren't shown.
* Solver: Symbolic quadratic equations and numerical equations of one variable can now be solved.
* Markdown: Bulleted lists, numbered lists, and quotes are recognized better and formatted more prettily.
* Google: Fixes various problems interpreting search results.
* Calculus: Added Jacobian of a list of functions, Taylor series expansion, and derivate of absolute values.
* Matrices: Added the transpose, fixed addition of scalars, and added empty matrices.
* Many other small additions and fixes. 1.1 07/23/2013 • Fixed bug that caused the app to crash when pressing the + button. 1.0.1 07/12/2013 1.0 07/03/2013