Bayhoff Software ( released AllCalc 1.0 for
the iPhone and iPod touch. It’s an all-in-one compilation of several
frequently used calculators, including calculators for Tips, Sales
Tax, Sale Price, Amortized Mortgages, Body Mass Index (BMI), and

Also included are over 45 unit conversions. AllCalc costs US$4.99 and
is available at the Apple App Store.