SymCalc+

I taught calculus and differential equations at a local university. I recommend this app for anyone who wants to do math. My PhD is in theoretical physics and I’ve ended up being an applied mathematician. The app is amazing!

I like the long visible history, ability to edit, memory variables and many functions.It is a pleasure to use. Though I probably use 1% of its abilities.

This works quite well on an iPhone. However on an IPad there is no 2nd function to select an operation on the last answer which is frustrating. For example the only way to operate on the last calculation is to press either * , / or +. There is no way to subtract from the last calculation without either copy and pasting or entering the whole result again. There ought to be an “ans” function like on a normal calculator. If you want to say take square root of the last calculation what do you do? Please enlighten me if I’ve missed something.