There's an iPhone app called Vintage Points which might be of use to those wishing to go back to the old system. M
I haven't tried it so can't comment on how good it is though.
I looked this up the other day. Do you have it? You have to pay for it, so I want to make sure it's worth it before I do. If it's just the calculator, I don't need that as I know the formula.
Sorry no I don't have it. I have iwatchr but that doesn't seem to be available anymore.
Tbh I think the apps only strengths are the calculator and ability to record what you've eaten already so not sure it's worth spending the money if you are managing without it.
I only posted it for those who don't have a calculator.