Program features:

• Easy to use intuitive interface with worksheet style documents.
• Complex, matrix and boolean arithmetic.
• 160+ built-in functions: statistical, distributions, fast Fourie transform, special etc.
• User defined functions and variables.
• Numerical integration and differntiation,  curve fitting.
• Equation solving and optimization.
• Physical constants and molar mass calculation.
• Adequate Software Calculator is free for non-commertional use.