Developer: Bill Crevier

SudokuBay is free and does not have any advertisements. The app can generate puzzles from a photograph of a Sudoku puzzle. A built-in OCR capability scans the photograph and lets you work on it in...

RPN Scientific is a scientific Reverse Polish Notation (RPN) calculator based on the venerable Hewlett Packard 10C scientific calculator. It performs most of the 10C’s math functions. RPN...