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 4.6

- Support for iPhone X added
- Adds some missing accessibility labels on the Apple Watch

Ratings and Reviews



Perfect replacement for the Apple app. Key sizes are just right.

Nice app!


This is certainly much more featureful than the Apple calculator. My only gripe is that hitting the 'mode' button to see the instructions wipes out the Stat data; it would be better if this wasn't wiped unless you change modes.



Looks AWSOME but I can't open it. When I tap it it says 'cannot be opened'


Alexander Clauss
10.5 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad and iPod touch.
English, German
Age Rating
Rated 4+
© 2017, Alexander Clauss
In-App Purchases
  1. Remove Ads $1.39


  • Family Sharing

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

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