What's New

Fixes an issue with unreadable buttons under iOS 14

App Description

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

- 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.

Colorized keys will help to distinguish between the different categories of the functions and operations. The user interface (design, colors) can be customized.


The App also includes a calculator widget for the notification center and a calculator App for the Apple Watch.

Note: This app uses ads to generate revenue to cover the costs for developement and support, and to be able to provide the App for free. But you can get rid of the ads permanently for a small fee via In-App purchase.

iPhone Screenshots

(click to enlarge)

Kalkulilo (Calculator) screenshot 1 Kalkulilo (Calculator) screenshot 2 Kalkulilo (Calculator) screenshot 3 Kalkulilo (Calculator) screenshot 4 Kalkulilo (Calculator) screenshot 5

iPad Screenshots

(click to enlarge)

Kalkulilo (Calculator) screenshot 6 Kalkulilo (Calculator) screenshot 7 Kalkulilo (Calculator) screenshot 8 Kalkulilo (Calculator) screenshot 9 Kalkulilo (Calculator) screenshot 10

Apple Watch Screenshots

(click to enlarge)

Kalkulilo (Calculator) screenshot 11 Kalkulilo (Calculator) screenshot 12 Kalkulilo (Calculator) screenshot 13

App Changes

  • November 13, 2012 New version 3.0
  • February 15, 2013 New version 3.0.1
  • February 07, 2014 New version 3.1
  • January 17, 2015 New version 3.2
  • April 13, 2015 New version 3.3
  • May 14, 2015 New version 3.3.1
  • June 17, 2015 New version 3.5
  • July 02, 2015 New version 3.5.1
  • October 06, 2015 New version 4.0
  • January 12, 2016 New version 4.1
  • June 22, 2016 New version 4.2
  • November 05, 2016 New version 4.5
  • June 13, 2019 New version 4.7
  • October 21, 2019 New version 4.8
  • October 28, 2019 New version 4.8.1
  • October 23, 2020 New version 4.9
  • October 23, 2020 Price increase: FREE! -> $1.99

Other Apps From Alexander Clauss

Numbers (Numeral Systems) Turing Machine Simulator iCab Mobile (Web Browser) NewsTap (Usenet Newsreader) NewsTap Lite (Usenet Reader) TI:ME Pado Sys Info Widget Nombri (Tally Counter) PurifEYE Browser iCab Kiosk (Web Browser) Legi (RSS Feed Reader) Strikodo