A new RPN calculator. This is not an emulation of any
specific calculator. The goal is to improve on emulations with - high resolution number display, enhanced number editing,
uncluttered keyboard, undo/redo.

Features -

- 4 register, 10 memory, RPN calculator - not programmable
- High resolution font
- Left and right cursor keys for enhanced number editing
- Cursor color indicates editing, blank before edit, push & blank before edit
- Undo and redo (instead of last x)
- All data is saved between uses, including undo/redo
- 5 modes for the top 2 key rows, and remap these keys
scientific
hex, h:m:s, m:s, y/m/d
unit conversions
normal distribution, line
loan, growth
- Sum x, x^2, y, y^2, xy, n, with mean, std dev, linear regression, cc
- Auto shift (hold key down for .5 second to get shift function)
- Help on many functions
- Background 3 digit number dividers (instead of commas)
- Calculates with 64 bit real numbers (integers limited to 48 bits)
- Any screen size, phone or tablet, portrait, landscape, or automatic
- Free, free of ads, and does not collect any data