Digital Slide Rule

Digital Slide Rule

by Ace Hoffman

14 ratings
7 reviews
Free

Details

  • Released
  • Updated
  • May 25, 2016
  • October 30, 2017

Features

Digital Slide Rule screenshot #1 for iPhone
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About

This app digitally recreates various types of slide rules, offering features not possible on physical models like color options and numeric displays. It includes a slideshow of famous slide rules and is best experienced on larger devices.

Simulates straight, circular, spiral, and cylindrical slide rules
Dozens of scales included
Color options and numeric value displays
Includes a slideshow of famous slide rules
Supports two-finger pinch/zoom and image rotation
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What's New in Digital Slide Rule

4.06.08

October 30, 2017

This app has been updated by Apple to display the Apple Watch app icon. Faster setup time after program is loaded (as much as 50% faster); streamlined internal processing (especially of Cylindrical Slide Rule); corrected "Display Estimated Hairline Values" for several of the alternate scales.

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User reviews

Brilliant!!!

Well done. Thank you.

Excellent app

Only, resizing and moving the ruler across the screen is very difficult

Absolutely Beautiful

Beautiful simulation of an actual slide rule with many variations of older slide rules.

An amazing app!

As a slide rule collector I was sceptical that such a complicated device could be modelled with such precision. The inclusion of scales devised after the end of the slide rule’s demise in 1974 is quite remarkable. There are so many wonderful features. I dont find battery drain to be a problem. The only very minor improvement would be to correct a few unusual scale divisions
(eg between 2 and 5x10^-5 on the LL03 scale, 2 and 3 x 10^4 on LL3 scale, and most notably between 2 and 3 on the A scale where divisions increase in 0.25 steps instead of 0.2). However these errors do not change the fact that this is a brilliant app.
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Excellent — This program really surprised me.

The slide rules are rendered realistically — you get a sense of what it was like to use them. Plus I also love that the text and the slide rules are integrated. Great job!

Developer apps

FAQ

What types of slide rules does Digital Slide Rule simulate?

Digital Slide Rule simulates the most common types of slide rules, including straight, circular, spiral, and cylindrical models. It offers dozens of scales and advanced features not possible on physical instruments.

Does Digital Slide Rule have ads?

No, Digital Slide Rule does not contain advertisements. It is a completely ad-free experience for users.

What are the system requirements for Digital Slide Rule?

Digital Slide Rule is available on iPhone, iPad, and iPod. The description notes it looks and runs best on large-format machines like tablets due to its detailed graphics.

How accurate is Digital Slide Rule?

The app replicates slide rules that were historically accurate enough for most occasions, used for complex engineering feats like building bridges and going to the moon. The digital simulation aims to maintain this level of utility.

How does Digital Slide Rule handle battery usage?

The app is processor-intensive, and heavy use may drain the battery quickly. While efforts have been made to optimize efficiency, some functions, like the initial load, can take a few moments.

What is the learning curve for Digital Slide Rule?

Slide rules were historically simple to use. This digital version aims to maintain that simplicity while offering enhanced features. The app includes a slideshow to provide historical context.

When was Digital Slide Rule first released and how often is it updated?

Digital Slide Rule was first released on May 25, 2016. The latest version, 4.06.08, was updated on October 30, 2017, indicating a less frequent update cycle in recent years.

What is the age rating for Digital Slide Rule?

Digital Slide Rule has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger individuals interested in educational tools.