Perfect for students and programmers!
The calculator allows to perform operations with numbers and to convert fractional numbers between numeral systems. Such numeral systems are available: binary, octal, decimal and hexadecimal.
Usage:
let we have to convert a number from binary system:
- touch EditText near label "Bin"
- input binary number
Act similarly to other numeral systems.

Notice: the program needs 3 permissions: billing, access wifi state and read phone state.