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.

What’s New

Version 4.7

- 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

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

gplally ,

Good calculator

This calculator has been in development for many years. It is reliable and cheap. The only thing I would like to see is a backup option, to save colour schemes.

Gtown bambaataa ,

Great app

Works pretty good. Thanks !

Summ-body ,


Was great until I updated and now adds pop up and keys shrink in height and move position to accommodate the add banner.
Says i can buy upgrade to eliminate adds which I would do but it won't let me.
Otherwise a great calculator. I've used this on my last 3 iPhones.


Alexander Clauss
14.8 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.


English, German

Age Rating
Rated 4+
© 2018, Alexander Clauss
In-App Purchases
  1. Remove Ads €1.09


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

More By This Developer

You May Also Like