Kalkulilo (Calculator)6.1 - App Store

Kalkulilo is a comfortable calculator program and offers several different modes.

- The scientific mode offers all the usual functions and operations like the basic arithmetical operations, power, logarithm, roots, trigonometry etc.

- The bit/integer mode offers logical operations (AND, OR, XOR, > > , etc.) on bit level. All values can be displayed as binary, octal, decimal or hexadecimal numbers. Calculations can be done in 8, 16 32 or 64 bits.

- In the statistics mode you can create a sample by adding several values and then calculate mean, median, quantil values, variance, standard deviation, range etc.

- Trigonometry mode provides lots of trigonometric functions, including legacy ones

- The base/radix mode allows you to do calculations with numbers of base 2 to base 36

- The Time mode lets you directly work with time values (hours, minutes seconds)

- A simple calculator is also included, with just the basic operators and large buttons.

The user interface can be customized, you can change the key colors for different categories of functions and operators which helps to distinguish and find these more easily.
The App also includes calculator widgets for the homescreen which allows to do calculations directly from your homescreen and a calculator for the Apple Watch.

Version History Adds support for the new iPhone Duo 6.1 Oct 7 Fixes a small bug where the App could display a time as "1h 2min 60sec" instead of "1h 3min" 6.0.4 Sep 26 Fixes an issue when negating the result of a calculation ( for example to use the negated value for another calculation). 6.0.3 Aug 5 - Bugfix: When storing a number (which was directly entered and not the result of a calculation) to the memory it was not possible to immediately enter a new number. The existing number was extended instead. This is now fixed. 6.0.2 Jul 9 - Better adjustment to the different rounded window corners under iPadOS 18 and older, 26 and newer and macOS
- On iPad and Mac it is now possible to make windows smaller than before. 6.0.1 Jul 8 - Completely rewritten to support the latest iOS technology
- On the iPad you can use the App in windowed mode and even open multiple completely independent calculators at the same time
- There are several different Widgets for the homescreen available (a simple calculator, a scientific one and a bit/integer calculator)
- All keys which provide multiple modes can be either tapped to switch through all the available modes, or long-pressed to pick the mode from a menu directly
- All other keys can be also long-pressed to display a more detailed meaning of the key, so when in doubt what a certain key is for, you can long-press it to find out. This feature can be also switched off in the settings if you don't need it.
- The "Engineering" mode now provides much more presets for the scientific calculator. There are modes for the common metric quantity prefixes (like nano, micro, kilo, etc)
- It's possible to copy the result into the clipboard and also paste in numbers and simple calculations (+, -, / , *, ( ,) )
- Via long-press of the "Exp" key you can directly enter one of the metric quantity prefixes, for example enter "1k" (kilo) instead of 1000 or "3m" (milli) instead of 0.001 6.0 Jun 30 Fixes a small layout issue on the iPad 5.1.4 10/20/2025 Fixes a font size issue on iPads which still have iOS 18 and older running. 5.1.3 10/17/2025 Fixes a crash within the Watch App 5.1.2 10/08/2025 - Improves the appearance of the homescreen widget when using the transparent mode of the homescreen under iOS 26. 5.1.1 09/17/2025 - Support for iOS 26 added
- Homescreen widgets for the calculator in different sizes added 5.1 09/16/2025 - New calculator mode added which deals with absolute values, integral, fractional, signum, ceiling, floor, truncate, gcd, lcm functions
- New option in the settings to copy numbers in the country-specific number format to the clipboard
- The swipe gesture to switch between the calculator modes can be switched off in the settings.
- The Watch App has received a slightly different design and layout 5.0 05/22/2022 Fixes an issue with unreadable buttons under iOS 14 4.9 09/17/2020 - Fixes an issue when copying a binary number with 64 Bit into the clipboard.
- Fixes an issue with unresponsive switches in the settings. 4.8.1 10/21/2019 - Adds support for the dark mode of iOS 13
- Adds support for the large text sizes of the accessibility settings of the system. 4.8 10/18/2019 - Support for the new iPhone XS, XS Max, Xr added
- Support for the new iPad Pro 11" and iPad Pro 12,9" added
- Support for the new Apple Watch 4 added
- Complications for the Apple Watch added, which can be used to quickly launch the Calculator on the watch 4.7 11/13/2018 - Support for iPhone X added
- Adds some missing accessibility labels on the Apple Watch 4.6 11/20/2017 - The Widget supports the new compact and expanded widget dimensions under iOS 10
- A few Bugfixes 4.5 09/28/2016 - Fixes an issue with the highlighting of certain buttons under newer iOS releases. 4.2 06/03/2016 - Added shortcuts for the AppIcon on the iPhone 6s/6s plus (3D Touch) to quickly open certain calculators directly from the home screen

- Fixes a small layout issue on the AppleWatch where the bottom row of buttons where difficult to touch (it looked like the „page control“ was overlapping the bottom part of these buttons) 4.1 01/11/2016 - Includes a native App for WatchOS 2 (which doesn’t need the phone to run)
- Supports the „Split screen“ mode of iOS 9 on the iPad (on iPad models which support this mode)
- It is possible to paste numbers from the pasteboard (tap on the "calculator display“ to get the copy/paste menu). 4.0 10/06/2015 - This version includes much more detailed accessibility labels for VoiveOver (for the App, Widget and Watch)
- Bugfix: A button in the Watch App was linked to the wrong function. 3.5.1 06/29/2015 This update includes an App for the Apple Watch. You can do calculations directly on the Apple Watch, so you don't need to pull your iPhone out of the pocket if you want to do some quick calculations. 3.5 06/17/2015 Fixes an issue with the User Interface settings under iOS 8. 3.3.1 05/11/2015 - The „modulo“ operation is now also available in Integer/Bit mode
- A widget for the notification center added (iOS 8 only) so the calculator can be now also used directly with the notification center
- A few bugfixes 3.3 04/04/2015