Custom Formulas (free)

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4.5: Added trig functions to calculator tool.
4.4: Improvements to the calculator tool.
4.3: Added a deg/min/sec button on calculator tool.
4.2: Improvements to free version.
4.1: Added the ability to email a formula group. Made the memory function in calculator tool persistent.
4.0: Changed the math constant "e" to be "_e_" to avoid confusion when you want to use the letter "e" as a variable. Added the ability to export all formulas, or all formulas within a category in one go.