Magic Number

Magic Number is a better calculator in every way:

• A better view of your calculation;
• More intuitive to enter and edit;
• Easier for everyday use;
• More capable for advanced problems.

Features

• Over 100 functions
• 25 digits accuracy
• 10 memories (variables)
• 4 customizable tax rates
• Over 50 scientific constants
• Statistics (via 'Data')
• Linear regression (via '2D-data')
• Matrix (Inverse, determinant, linear equations via Gauss-Jordan Elimination)

Note: Currently available for $4.99.

• A refreshed design - Clearer, cleaner, and 100% made for retina.
• Global shortcut - Quickly switch to Magic Number from any app.
• Improved math typesetting - More beautiful than ever. Now with subscripts.
• A smarter editor - Smart at selecting. Great at inspecting.
• Enhanced constants - Easier, faster, with better keyboard support.
• Lots of nice touches - Shortcuts, refinements, and fixes.