HiCALC - Your Trusted Calculator with 12 modules - Arithmetic, Trigonometry, Matrices, Constants, Finance, Statistics, Biorhythm, Tip, Currency Converter, Unit converter, Base conversion and User’s macro, will make all your calculations become so simple as never before.

Features:

• Support for Treo 700w and square screen devices
  
• Windows Mobile 5.0 support and Landscape mode
  
• Support for Complex numbers
  
• Online update currency exchange rate daily and support for 186 currencies
  
• Smart input which allows input of complicated expressions
  
• Show expression as normal writing mode (really useful for complicated expressions)
  
• Show functions tooltip for fast entry of expressions
  
• Skinable and sound support
  
• Full feature trial version for 14 days.
  

HiCALC supports:

• Most of basically Arithmetical functions: +, -, x, ÷, +/-, 1/x, %, x², x³, x^y, exp, 10^x, e^x, log, ln, (!), Modulus....
  
• And Trigonometric functions:
  Sine, Cosine, Tangent, Cosecant, Secant
  Hyperbolic(sine, cosine, tangent)
  Inverse(sine, cosine, tangent, cosecant, secant)
  Inverse hyperbolic(sine, cosine, tangent)
  
• Scientific Functions
  HiCALC not only supports basic functions but also supports a set of important advanced functions:
  
• Derivation function
  
• Evaluation function
  
• Integration function
  
• Root-Finder and Product function
  
• Greatest Common Divisor
  
• Least Common Multiple
  
• Fibonacci function.
  
• Financial Functions
  
• Supplies financial functions:
  Present Value (PV), Future Value
  Interest Rate, Payment Amount
  Mortgage and Loan calculator
  The total number of payment periods(NPER)
  Straight-line depreciation (SLN)
  Depreciation of an asset for a specified period using the fixed-declining balance method(DB)
  
• Matrices Functions
  Other than supporting basic functions such as +, -, x, ÷ matrices, HiCalc supplies matrices functions:
  
• Determinant of matrix (DET)
  
• Invert a matrix (INV)
  
• Eigenvectors of matrix (EIGV)
  
• Eigenvalues of matrix (EIGL)
  
• Orthogonal matrix (ORTH)
  
• Rank of matrix (RANK)
  
• Transpose of matrix (TRANS)
  
• Triangle matrix (TRI)
  
• Solves a linear system AX =B
  
• Statistics Functions
  
• Summation of Data
  
• Summation of Squares of Data
  
• Population standard deviation
  
• Sample standard deviation
  
• The mean (arithmetic average)
  
• Geometric mean (GM)
  
• The median of the given numbers
  
• The average of the absolute deviations(AVD)
  
• Summation of squares of deviations
  nPr, nCr, Min, Max and more...
  
• Currency Converter
  

Users functions:

This module allows users to predefine the formula themselves basing on basic functions of the system. HiCALC supports maximally 26 user functions. It is very useful for people who have to build up a predefined-formula regularly (i.e. banker, accountantetc…)

And more...
Base Conversion, Biorhythms, Lookup constant and Tip are great features in HiCALC also.