What's New

- Expanding the calc is back for iOS 7
- New preference for hiding toolbar
- Fixes (iOS 6 double-tap, Ans, more)

App Description

ND1 is an advanced, programmable RPL/RPN calculator that can calculate with numbers, complex numbers, fractions, vectors, matrices, strings, images, algebraic expressions, and other types of objects.

Over 500 operators deliver a total of over 2,000 functions across all object types.

In many ways, ND1 is a modern day update to the RPL calculator line from HP (28, 48-50g).

It offers RPL, RPL+, JavaScript, networking, and modern graphics (HTML5) and storage (a database with local and cloud backing). ND1 has an unlimited stack.

Try ND0 before you buy, if you're unsure ND1 is for you.

There's plenty of documentation for ND1.

Please see the support website for full specs, a "Quick Tour", tutorials, reference documentation, and a discussion forum, where support can be found.

iPhone Screenshots

(click to enlarge)

ND1 screenshot 1 ND1 screenshot 2 ND1 screenshot 3 ND1 screenshot 4 ND1 screenshot 5

App Changes

  • June 24, 2011 New version 1.3.9
  • July 23, 2011 New version 1.3.10
  • January 04, 2012 New version 1.4
  • January 04, 2012 Price increase: $5.99 -> $9.99
  • February 01, 2012 New version 1.4.1
  • February 23, 2012 Price decrease: $9.99 -> $7.99
  • April 14, 2012 Price decrease: $7.99 -> $5.99
  • October 18, 2013 New version 1.5
  • November 14, 2013 New version 1.5.1
  • January 30, 2014 Price decrease: $5.99 -> $2.99
  • February 10, 2014 Price increase: $2.99 -> $5.99
  • March 10, 2014 Price decrease: $5.99 -> $2.99
  • March 14, 2014 Price increase: $2.99 -> $5.99
  • March 16, 2014 Price decrease: $5.99 -> $2.99
  • March 20, 2014 Price increase: $2.99 -> $5.99
  • March 21, 2014 Price decrease: $5.99 -> $2.99

Other Apps From Oliver Unter Ecker

Realtime Mandelbrot Realtime Mandelbrot Lite April's Fool: Your IQ ND0 RPN Graphing Calculator