Pocket Slide Rule

You don't know how to use a Slide Rule? And you call yourself a nerd! Get some help with this retro app.
Now available on iPhone, iPad, and iPod Touch.


Pocket Slide Rule on iPhone
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Effective

Cal

With over a dozen scales, this is no toy. This slide rule was designed to be as powerful an one from the device's heyday. The 'auto' mode will show you how to utilize your rule.

Elegant

cul

This is no mere workhorse, either. What draws people to slide rules to this day is their simple beauty. This app captures that essence.

Precise

ate

A slide rule is only as precise as your fingers, so what does that mean for a touch screen? Fear not! This app features a one-of-a-kind 'brakes' button which slides the rule precisely.

Slide Rule Links

Because if you've read this far, admit it, you like Slide Rules.

One to Rule them All

How to Use a Slide Rule

  • Slide Rule Instructions from the Museum of HP Calculators. This list of instructions is helpful, concise, complete, and matches the functionality of this app.
  • International Slide Rule Museum This site has an exhaustive description of how to use a slide rule, along with helpful pictures of all the steps.

Get a Slide Rule

  • Pocket Slide Rule Expert: You can't go wrong with my digital slide rule for your iPhone! Though if you really want a physical one...
  • 'Think Geek' Slide Rules: It's been a while since new rules have been made, but Think Geek has pioneered the way. It is a basic rule (not all the lines of my Pocket Slide Rule, for instance), but it works. It currently seems to be out of stock, though I've seen them around.
  • Sphere's Slide Rule Marketplace: There are plenty of old slide rules around, and if you'd like to find one, this is a good place to start.

Latest News

August 2010: Pocket Slide Rule Released

November 2010: Pocket Slide Rule Expert Released