I've been using this app for about four months now and I've not had a single issue with it, perfect, this isn't just a normal calculator, it actually shows you the reason for the answer, definitely very helpful, BUT, if the answer for the equation or problem is a negative it doesn't make the negative sign white, it's gray like the equals sign, so sometimes I don't see the negative sign, so I would appreciate it if that was changed, thank you.
Bobby Mangold