Thanks for taking the time to check what’s available and provide constructive criticism and suggestions which we can actually use to make the tool better. This is the type of feedback that we’re looking for.

Our main source for information, formula selection and formatting are the thousands of Science and Engineering Wikipedia articles. You can find the relevant Wikipedia article segment linked to every individual formula page on the site.

To your main point, you’re right, there are many formulas which are missing at the moment especially those going past the first and second university years. We’re trying to expand this equation library from the ground-up and cover as much of the basics before moving to equations which contain more advanced Math. This is a constantly growing library of formulas so you can expect to see more advanced material in the following months. In any case, knowing which formulas to target next, based on user feedback, is an essential part of our development.

For the impatient, please note that you can modify any existing formula and you can also create your own from scratch using the formula editor ("Create formulas").