William Jockusch

Special Relativity

Special Relativity is a theory that can be derived from two fundamental principles. If you have a good understanding of algebra, including...

By William Jockusch | Added June 5, 2019

Scientific Graphing Calculator

I would recommend buying the Scientific Graphing Calculator 2 instead of this app. That said, I will be maintaining this app. Features:...

By William Jockusch | Added September 30, 2017

Free Graphing Calculator 2

The Free Graphing Calculator app, re-written from the ground up: All screens have portrait and landscape. Polynomial solver up to 10th...

By William Jockusch | Added September 27, 2017

Free Graphing Calculator

Now over 4 million downloads. Thanks users. A powerful, flexible graphing calculator. and it's free. Does far more than most of the...

By William Jockusch | Added September 27, 2017

Free Graphing Calculator 2 for Windows 10

The wildly successful iOS app, finally on Windows. Use the in-app-keyboard, or, if on desktop, just type your math. Does far more than...

By William Jockusch | Added June 1, 2017

Triangle Solver

If you know two angles and one side of a triangle, quickly and easily calculate the rest.Also handles cases where you know two sides...

By William Jockusch | Added June 10, 2016

Networked Die Roller

Turns your iDevice into a networked dice roller. Share rolls with your friends in real time. Best of all, it's free!

By William Jockusch | Added June 10, 2016

Days between Dates

Quickly and easily calculate the number of days between any two dates you choose. All you have to do is spin the dials to pick your...

By William Jockusch | Added May 5, 2016

Yacht Free

Why pay more for your favorite dice game?Also includes a variant -- Chinese Yacht! Yahtzee lovers will find this variant to be an intriguing...

By William Jockusch | Added May 3, 2016

Scientific Graphing Calculator 2

** Reduced price because I really want to encourage people to upgrade.**** I believe this is now better overall than the Scientific...

By William Jockusch | Added January 3, 2016

Ad-Free Unit Converter

That's right -- this is a free app, with no ads! Saves you bandwidth, battery life, and annoyance. This is possible because the app...

By William Jockusch | Added March 14, 2014

Free Math Notes

This app helps you with your math! Look up what you need, when you need it. All presented in a format that makes it easy to find what...

By William Jockusch | Added April 22, 2012

Math Notes

These notes are simple. They take one idea at a time. And you can understand them. Just like this description.Topics:AlgebraCalculusClassical...

By William Jockusch | Added April 22, 2012

Fraction Drills

Having problems learning to work with fractions? Or just want a refresher? This app will help you do that!The available problem types...

By William Jockusch | Added March 4, 2011

Fraction Drills Free

Having problems learning to work with fractions? Or just want a refresher? This app will help you do that . . . for free!The available...

By William Jockusch | Added February 14, 2011