PalmaryCalc is a calculator with a user-friendly interface.

It is all in one: from a simple calculator to a scientific, conversion functions (from cooking to astronomical), credit, base number conversions between binary, octal, decimal, and hexadecimal; 32-bit, 16-bit, and 8-bit integer math calculations and conversions; logical and bit-manipulation operations, currency conversion, or any other calculator configuration that you desire.

The variety of input methods (including RPN) enables you to perform almost all operations you need.

Features - User-friendly interface - Treo 600/650 support - Hi Res (320x320) support - 15-digit display - 35 basic math and trigonometric functions - Mortgage rate calculations - Tip calculations - Unit and currency converter - User adjustable currency list - User adjustable constants list - 3 different input methods (simple, algebraic, RPN) - 4 different modes display modes - RPN stack viewing - Accurate calculation: features up to 18 digits after the decimal point - Accurate result display: features up to 12 digits after the decimal point - Calculation range (1e-300, 1e300) - Memory capacity up to 10 independent values - 15 most common constants - Fully supported Palm clipboard - Graffiti and Palm portable keyboard support - Easy first-letter search through the lists