Good but with one problem

Conceptually, this is a very good idea for an app. However, speaking as someone who has as much trouble remembering what all the variables stand for as the formulas themselves, I would get much more use out of it if I didnt have to have a second reference to help me remember what "k" represents in a particular equation. Just replace the variables in your equations with the components they represent, and this truly will be a one-stop-shop for formula recollection. Remember, its more important to know what a variable represents than to use the "correct" variable for a specific value.

ForgetfulGuy7890 about iFormulas, v2.2.1