David Šimák

App for converting PDF files to JPG or PNG images. App show your PDF document before converting, so

With Percentage Calculator you can instantly calculate and visualize almost all kind of percentages.

Application Chemical elements and nomenclature are used to search for elements and nomenclature of c

This is old version of app. New version https://play.google.com/store/apps/details?id=cz.david_simak

Simple application for physical and chemical calculations. This app help you in physics, math and ch

Simple application for physical and chemical calculations. This app help you in physics and chemistr

Physics is simple physical apps with important physical constants, more than 100 formulas and part o

Math Calculator is a simple calculator in material design. With this calculator you can calculate si

This app is used to generate any number of random numbers within the range you specify.

Unit Converter is simple app for converting physicals and chemicals unit.